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# At the end of the week long conference, students from all local school

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Intern
Joined: 22 Jan 2014
Posts: 1

Kudos [?]: [0], given: 2

At the end of the week long conference, students from all local school [#permalink]

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18 Sep 2017, 06:08
At the end of the week long conference, students from all local schools performed a cultural program.

Select the correct choice if the performance took place before the conference ended

A. At the end of the week long conference, students from all local schools performed.

B. At the end of the week long conference, students from all local schools had performed.

C.By the time conference ended, students from all local schools had performed.

Correct Answer is C but I dont get why B is wrong?

Guys thanks in advance. This is my first ever post here
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Kudos [?]: [0], given: 2

VP
Status: Long way to go!
Joined: 10 Oct 2016
Posts: 1182

Kudos [?]: 884 [1], given: 54

Location: Viet Nam
Re: At the end of the week long conference, students from all local school [#permalink]

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18 Sep 2017, 08:02
1
KUDOS
KomalSg wrote:
At the end of the week long conference, students from all local schools performed a cultural program.

Select the correct choice if the performance took place before the conference ended

A. At the end of the week long conference, students from all local schools performed.

B. At the end of the week long conference, students from all local schools had performed.

C.By the time conference ended, students from all local schools had performed.

Correct Answer is C but I dont get why B is wrong?

Guys thanks in advance. This is my first ever post here

The question asks you to "select the correct choice if the performance took place before the conference ended". Hence, we need to choose perfect tense, leave B & C. Using perfect tense, we need to use "by". C is better.
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Kudos [?]: 884 [1], given: 54

Re: At the end of the week long conference, students from all local school   [#permalink] 18 Sep 2017, 08:02
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