Question

My cousin had an accident ______a cold winter morning.

1. A.
   in
2. B.
   at
3. C.
   on
4. D.
   for

Answer 1

C
考查介词。in后接年、月或季节，也可跟一段时间，如in the morning；at后接时间点；on指具体的某一天，或具体某一天的某个时间段，如on a cold winter morning; for后接时间段。