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Source: Official Guide for the GMAT 13th Ed. Sentence Correction; #139 Official Guide for the GMAT 2015 14th Ed. Sentence Correction; #139


In no other historical sighting did Halley's

In no other historical sighting did Halley's Comet cause such a worldwide sensation as did it return in 1910-1911.

3 Explanations



Whereas I understand the explanation of the right answer, I don't follow the first line of the speaker's notes in green. What does it signify?

Jul 17, 2018 • Comment

David Recine

"(Subj x)(verb) as y did" describes a more common pattern for the use of "as" and "did" in sentences. This pattern is used to directly compare the actions of two things. As an example, you collude this grammar pattern to say something like "He ran quickly, as his sister did," or "The corn stalk grew differently than the tree did."

Mike presents that first line in the notes to make it clear that the actual sentence is NOT following the common (subject x)(verb)(as y did) pattern, but is instead following a different pattern and communicating a different kind of idea.

Jul 18, 2018 • Reply


Kavita Gupta

Is 'return of 1910-1911' correct or 'return in 1910-1911' ?

The OG15 mentions 'return in' in their explanation whereas 'return of' in the answer choices.

Jul 29, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Hi Kavita,

You've brought up an interesting question. Choice (C) is definitely the most correct answer based on the parallel structure issues discussed in the explanation. After re-reading the sentence several times, "return in" seems more appropriate to me (to denote the period in which the comet returned). That said, I have not seen any other comments here or in other forums about the incorrect use of "return of" in this context.

Remember, for SC questions, you're looking for the most correct answer. So, even though "return in" could be seen as more correct than "return of", (C) is the most correct choice based on the arguments of parallelism.

I hope this helps, at least a little :)

Aug 29, 2016 • Reply


Gravatar Mike McGarry, Magoosh Tutor

May 25, 2013 • Comment

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