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
OA is C
Please explain .....
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes
OA is C
Please explain .....
