Events & Promotions
| Last visit was: 06 Sep 2026, 03:59 |
It is currently 06 Sep 2026, 03:59 |
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 0609:30 AM EDT
-12:30 PM EST
Top scores are possible when you enroll in a powerful EA course, taught live online + 6 months access to TTP OnDemand video courses included! Perfect class schedule and easy course access for working professionals. Class starts Sundays Sept. 6, 2026.
Sep 0712:01 AM PDT
-11:59 PM PDT
On the 7th, GMAT Club Tests will be Free! Including all the Quizzes, Questions, and Tests. 12 AM - 11:59 PM PDT
Sep 0712:30 AM EDT
-01:30 AM EDT
Tejas studied hard but kept repeating the same mistakes. After 3 attempts at 645, a focused 4-week strategy helped him identify and fix what was holding him back—leading to a 695 with just 12–15 hours of study per week.
Sep 0201:00 PM EDT
-11:59 PM EDT
Take 30% off all study plans with code COURSEWORK - Expires on Monday 9/7
Sep 0401:30 AM EDT
-02:30 AM EDT
This Labor Day, turn your hard work into real score gains. From 615→715 in 15 days to 705 in 30 days, our students prove what's possible with personalized, expert guidance. Save up to 25% on 1-on-1 tutoring.
Sep 0410:00 AM EDT
-11:59 PM EDT
We’ve worked incredibly hard to build TTP into the best test prep experience possible, and it would mean a lot to us to win Newsweek’s 2026 Readers’ Choice Award for Best Test Prep. If TTP has helped you, we’d be incredibly grateful for your vote.- Sep 07
10:00 AM PDT
-11:00 AM PDT
A complete walkthrough of GMAT Club’s free 12-week GMAT study plan: what you study each week, how progress and goals are tracked, how the error log works, and how your practice unlocks paid tools at no cost. - Sep 09
07:00 AM PDT
-10:00 AM PDT
Meet AdComs and explore top Master’s programs - MiM, MiF, MSc, MSBA and more. - Application Fee Waivers - Free 1-Week of GMAT Club Tests: - Master's Application Toolkit - Grand Prize Giveaway - Sep 09
10:00 AM PDT
-11:00 AM PDT
Three MBA applications. Three rejections. No interview invites. A year later, Aman was admitted to Cambridge Judge, SMU, and IMD. In this episode of MBA Admit Stories, Aman shares how he rebuilt his MBA application... 
Sep 1008:00 PM PDT
-09:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2108:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
72% (01:20) correct
28%
(01:37)
wrong
based on 11644
sessions
History
Date
Time
Result
Not Attempted Yet
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.
(A) that flourished at the same time as the civilizations
(B) that had flourished at the same time as had the civilizations
(C) that flourished at the same time those had
(D) flourishing at the same time as those did
(E) flourishing at the same time as those were
(A) that flourished at the same time as the civilizations
(B) that had flourished at the same time as had the civilizations
(C) that flourished at the same time those had
(D) flourishing at the same time as those did
(E) flourishing at the same time as those were
https://www.nytimes.com/1985/09/24/science/progress-reported-in-struggle-to-save-imperiled-ruins.html
FOR thousands of years, the Indus River has brought the blessing of water for crops and the curse of destructive floods. But today the Indus River poses a new danger to the site of an ancient civilization that flourished at the same time as those in the river valleys of the Tigris and Euphrates and the Nile.
Moisture and salt deposits threaten to erode and destroy the remarkable Mohenjo Daro archeological excavation that has fascinated and awed scientists and visitors since its discovery under a giant mound of earth more than 60 years ago.
01.jpg [ 118.51 KiB | Viewed 79227 times ]
02.jpg [ 76.32 KiB | Viewed 79115 times ]
FOR thousands of years, the Indus River has brought the blessing of water for crops and the curse of destructive floods. But today the Indus River poses a new danger to the site of an ancient civilization that flourished at the same time as those in the river valleys of the Tigris and Euphrates and the Nile.
Moisture and salt deposits threaten to erode and destroy the remarkable Mohenjo Daro archeological excavation that has fascinated and awed scientists and visitors since its discovery under a giant mound of earth more than 60 years ago.
Attachment:
01.jpg [ 118.51 KiB | Viewed 79227 times ]
Attachment:
02.jpg [ 76.32 KiB | Viewed 79115 times ]
If this question felt shaky,
try an adaptive mini quiz of similar problems in
GMAT Club Forum Quiz →. Free plan gives 5 questions per day.
06 Jun 2010, 00:59
Kudos
Bookmarks
Hi Guys-- besides the much-discussed comparison, did you catch the idiom they're testing you on? See explanations below.
Salt deposits and moisture threaten to destroy the
Mohenjo-Daro excavation in Pakistan, the site of an
ancient civilization that flourished at the same time
as the civilizations in the Nile Delta and the river
valleys of the Tigris and Euphrates.
(A) that flourished at the same time as the
civilizations
(B) that had flourished at the same time as had
the civilizations
(C) that flourished at the same time those had
(D) flourishing at the same time as those did
(E) flourishing at the same time as those were
A. The comparison uses the idiom same X.... as Y. X is 'an ancient civilization', and Y is a 'the civilizations'-- a logical comparison. And what about tenses? How do we know that the past simple (flourished) is needed? The time modifier for the verb is "at the same time"; now, 'at' indicates a specific point in the past.
Note on ellipses in comparisons: As long as the verb of comparison is in the same tense for both items of comparison, you do not need to repeat the verb (you can but don't need to).
Ex. I ate dinner at the same time as my brother ('did'-- optional).
Ex. I eat as much as my brother ate ('ate'-- not optional) when he was on the football team.
B. The only error in B is the past perfect, "had flourished", for there is no indication that the flourishing had taken place before some other point in the past.
C. NOTE: THERE IS NOT 'AS'! Once you start with the word 'same' you must complete the idiom with 'as'. Second, every time you run into the words 'that'/'those' (or any pronoun for that matter) you must ask yourself 'that'/'those' what? Here, 'those' indicates 'those civilizations,' BUT THE WORD 'CIVILIZATIONS' (plural) IS NOT IN THE SENTENCE. So there is no referent for the pronoun.
D. Same as C
E. Same as C
Hope this helped!
-Sarai
If this helped, kindly give Kudos!
Salt deposits and moisture threaten to destroy the
Mohenjo-Daro excavation in Pakistan, the site of an
ancient civilization that flourished at the same time
as the civilizations in the Nile Delta and the river
valleys of the Tigris and Euphrates.
(A) that flourished at the same time as the
civilizations
(B) that had flourished at the same time as had
the civilizations
(C) that flourished at the same time those had
(D) flourishing at the same time as those did
(E) flourishing at the same time as those were
A. The comparison uses the idiom same X.... as Y. X is 'an ancient civilization', and Y is a 'the civilizations'-- a logical comparison. And what about tenses? How do we know that the past simple (flourished) is needed? The time modifier for the verb is "at the same time"; now, 'at' indicates a specific point in the past.
Note on ellipses in comparisons: As long as the verb of comparison is in the same tense for both items of comparison, you do not need to repeat the verb (you can but don't need to).
Ex. I ate dinner at the same time as my brother ('did'-- optional).
Ex. I eat as much as my brother ate ('ate'-- not optional) when he was on the football team.
B. The only error in B is the past perfect, "had flourished", for there is no indication that the flourishing had taken place before some other point in the past.
C. NOTE: THERE IS NOT 'AS'! Once you start with the word 'same' you must complete the idiom with 'as'. Second, every time you run into the words 'that'/'those' (or any pronoun for that matter) you must ask yourself 'that'/'those' what? Here, 'those' indicates 'those civilizations,' BUT THE WORD 'CIVILIZATIONS' (plural) IS NOT IN THE SENTENCE. So there is no referent for the pronoun.
D. Same as C
E. Same as C
Hope this helped!
-Sarai
If this helped, kindly give Kudos!
19 Feb 2014, 15:15
Kudos
Bookmarks
rajgurinder
Dear rajgurinder,
I'm happy to respond.
This, of course, is SC #89 in the OG13. You may find this blog helpful:
https://magoosh.com/gmat/2013/dropping-c ... -the-gmat/
One of the hardest things about parallelism is what one can legitimately omit in the second branch, and figuring this out from sentence in which the omission has already happened.
Choice (A) gives perfectly correct parallelism. Part of what's confusing about this sentence is that the words "the site" is an appositive phrase, and the whole rest of the sentence modifies this phrase. For clarity, let's talk about the comparison directly, in its own sentence. The long way to say it would be:
The ancient Mohenjo-Daro civilization flourished at the same time that the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates flourished.
That version is perfectly grammatically correct, but because it's long and wordy, it never would be correct on the GMAT. A shorter and perfectly correct way to say this is:
The ancient Mohenjo-Daro civilization flourished at the same time as the the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates flourished
That is, in essence, the same structure as the OA above. Including the word "did" as you suggest would also be correct, only a little longer --- that's perfectly acceptable, but not necessary to make the sentence correct.
Think about it this way. Think about where the word "same" appears. It appears inside a prepositional phrase, "at the same time" ---- this prepositional phrase is an adverbial phrase, that is, a verb-modifier. See:
https://magoosh.com/gmat/2012/gmat-gramm ... d-clauses/
This suggests that the comparison is not between "time" and something else, but rather, that the comparison is between two verbs, both modified in the same way by the modifying phrase. For example:
A did X at the same time that B did Y.
If the two do the same action, it's redundant to say:
A did X at the same time that B did X
and much better to say
A did X at the same time as B.
The predicate, "did X", is the same, so it is dropped, and the comparison, the "same time", refers to the time of those two identical predicates.
Does all this make sense?
Mike
29 Aug 2013, 06:27
Kudos
Bookmarks
gmatter0913
if this was the option then also it is not wrong:
(A) that flourished at the same time as did the civilizations
we can omit the verbs when the following condition are met:
1)we should have parallel construction involving verbs
2)verbs of both (or all if more than 2 structures are parallel) are exactly the same (in the same tense including)
3)omitting verb doesn't create ambiguity.
if above condition satisfy then we can omit the verb in ALL BUT the first.
coming to this question:
we have 2 parallel structure:
the site of an ancient civilization flourished
at the same time as
the civilizations in the Nile delta and the river valleys flourished.
or
DID the civilizations in the Nile delta and the river valleys
Now we can see all three condition are meeting.
so we can omit verb from 2nd parallel structure.
hope this much is clear.
similar simple example:
francis ran faster than xavier ran.
francis ran faster than xavier..
francis ran faster than did xavier.
francis ran faster than xavier did.
all the above 4 sentences are correct only thing is that 2 nd sentence is best
take another example when after removing verb sentence becomes ambiguous
the tycoon supported Jones
more than
anyone else supported jones.
first 2 conditions are satisfied ...lets remove the verb and check for ambiguity thing.
the tycoon supported Jones more than anyone else in the industry.
now here it is ambiguous.
how?
there can be 2 meanings.
1)the tycoon supported jones more than the tycoon supported anyone else
2)the tycoon supported jones more than anyone else supported jones.
now under these cases you are not going to OMIT the verbs.
hope it helps
