Question

It ________ the students about half an hour to walk to the top of the mountain.

1. A.
   spent
2. B.
   took
3. C.
   uses
4. D.
   got

Answer 1

B
根据句意为“到达山顶大约花费了学生们半个小时。”且主语为it可知，应用动词take的过去式took。