The students like to go a trip spring.A. on; onB. in; onC. to; inD. on; in

问题补充：

The students like to go a trip spring.

A. on; on

B. in; on

C. to; in

D. on; in

答案：

A. on; on

B. in; on

C. to; in

(答案→)D. on; in

解析：句意：学生们喜欢在春天去旅行。在春天，习惯用介词in；go on a trip去旅行，是一个固定短语。所以选D。