car wash

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car wash

by melon » Sat Oct 06, 2012 11:16 pm
Before advertising on the second-hand market, many owners invest in repairing, painting, and polishing their cars as it increases the vehicle's retail value.

repairing, painting, and polishing their cars as it
repairs, painting, and polishing their cars as doing so
repairing, painting, and polish their cars as doing so
repairing, painting, and polishing their cars because it
repairing, painting, and polishing their cars because to do so

OA E
can some one please explain
Source: — Sentence Correction |

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by Kasia@EconomistGMAT » Wed Oct 10, 2012 5:24 am
A, D - incorrect, "it" is not the right word to be used in reference to -ing form
B - parallelism mistake, "repairs" are not parallel with "painting" and "polishing"
C - similarly like in answer B, there is a parallelism mistake - the verb "polish" is not parallel with "repairing" and "painting"
E - correct
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