Warsaw began to rebuild not only with brand-new structures,

Good explanation...C it is.

Hi goalsnr...the parallelism in not only...but also... is with brand-new structures not with injecting...ie adjective-noun parallelism.

Between C and D - I choose D because D employs a clause-reduced-to-a-phrase structure (without loss of meaning)

brand-new structures, injecting a much-needed boost to the local economy, but also painstakingly reconstructing the old ones

painstakingly (adverb modifying the adjective reconstructing) reconstructing (adjective) = the entire phrase PAINSTAKINGLY RECONSTRUCTING modifies old ones

So the parallelism can be explained thus

Warsaw began to rebuild

not only

brand-new structures,

injecting a much-needed boost to the local economy,

but also

painstakingly reconstructing the old ones

that had been demolished.

Hi dwivedys,I chose C because it makes more sense:

Warsaw began to build not only brand-new structures...but also painstaking reconstructions...

Whereas D says:
Warsaw began to build not only brand-new structures...but also painstakingly reconstructing...how can warsaw rebuild painstackingly reconstructions??...any thoughts??...Am I going wrong somewhere??

I think "brand-new structures" and "painstaking reconstructions" are parallel. We need same form of words after not only and but also. No?

new structures and old ones are parallel

NOT

new structures and reconstructions



painstaking reconstructions of the old ones

and

painstakingly reconstructing the old ones

both convey different meaning

I prefer to disagree with u.

New structures are being built. And reconstructions of old ones are being built.

Old ones are not the ones which are built. Obviously, they can't be built two times.

Hence, I would say new structures and reconstructions are parallel.

Exactly.
Look at the || construction:

Warsaw began to rebuild not only brand-new structures, injecting a much-needed boost to the local economy, but also painstaking reconstructions of the old ones that had been demolished.

[quote="catgmat"]Warsaw began to rebuild not only [u]with brand-new structures, injecting a much-needed boost to the local economy, and also painstaking reconstructions of the old ones[/u] that had been demolished.


A. with brand-new structures, injecting a much-needed boost to the local economy, and also painstaking reconstructions of the old ones
B. with brand-new structures, injecting a much-needed boost to the local economy, as well as painstaking reconstructions of the old ones
C. brand-new structures, injecting a much-needed boost to the local economy, but also painstaking reconstructions of the old ones
D. brand-new structures, injecting a much-needed boost to the local economy, but also painstakingly reconstructing the old ones
E. brand-new structures, injecting a much-needed boost to the local economy, but they also began painstakingly reconstructing the old ones[/quote]

(C)

A-incorrect use of idiom "not only... but also"
B-incorrect use of idiom "not only... but also"
C-correct; idiom "not only ADJ+NOUN....but also ADJ+NOUN
D-the elements of the idiom are not grammatically parallel
"...not only ADJ+NOUN.... but also ADVERB+VERB"
E-incorrect use of idiom "not only... but also" (the pronoun 'they' should be removed)

C. ..began to rebuild ....... painstaking reconstructions of the old ones
D. ..began to rebuild ....... painstakingly reconstructring the old ones

Chose D.

[quote="Juaz"]C. ..began to rebuild ....... painstaking reconstructions [b]of the old ones [/b]
D. ..began to rebuild ....... painstakingly reconstructring [b]the old ones [/b]

Clear D.[/quote]

'began to rebuild' is affecting BOTH 'brand-new structures' and 'painstaking reconstructions', so the parallel structures should be the above mentioned...

if you look at the structure of the sentence, you will find something like this:
'...began to rebuild NOT ONLY X...BUT ALSO Y..'

....and the winner is: OA is C for the reasons mentined by many of you, i.e. parallelism:
Warsaw began to rebuild not only brand-new structures, blablablabla, but also painstaking reconstructions of blablablabla.
thumbs up for the discussion and cheers!

I chose D, coz the word "Began" indicates and event that happened in the past and still continuing. which means the painstaking effort is stillcontinuing. hence chose the ing form in reconstructuing.

can someone clarify this.

Are you saying BEGAN implies a present-perfect tense? If that's the case then it's not correct. For present perfect you need HAS/HAVE + past participle..

Has Begun will indicate an action that BEGAN in the past and is continuing into the present.

THis question by the way blew the living lights out of me.