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by GmatKiss » Sun Oct 02, 2011 11:47 am
Because Halley's comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

Please explain!
Source: — Sentence Correction |

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by Luke.Doolittle » Sun Oct 02, 2011 2:25 pm
GmatKiss wrote:Because Halley's comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

Please explain!
Stacey has a good explanation at the end of this thread.

https://www.beatthegmat.com/halley-s-comet-t37650.html

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