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Sentence Correction: Preposition Questions - Split Constructions

John never drinks and drives because the last time he did so, he ran and killed a dog.

Excellent!

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This answer choice is the only answer that corrects the original Split Construction mistake (by adding the preposition over after the verb ran). In other words, it is the only grammatically correct answer.

It is true that stylistically, it is flawed (redundant). However, grammar precedes style on the GMAT. The correct answer may be stylistically flawed, but it can never be grammatically incorrect.

This answer choice repeats the original mistake.

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In addition, replacing the singular verb drives with the plural form drive creates a Subject Verb Agreement mistake.

This answer choice repeats the original mistake.

[[snippet]]

In addition, replacing a with the changes the meaning of the original sentence.

This answer choice repeats the original mistake.

[[snippet]]

In addition, this answer choice is stylistically flawed. The addition of the word also creates redundancy.

This answer choice is grammatically incorrect.

[[snippet]]
drives because the last time he did so, he ran and killed a
also drives because the last time he did so, he ran and killed a
drives since the last time he did so, he ran and killed the
drives due to the fact that the last time he did so, he ran over and killed a
drive because the last time he did so, he ran and killed a