The teacher asked the students to do the experiment small groups.A. toB. forC. onD. in

问题补充：

The teacher asked the students to do the experiment small groups.

A. to

B. for

C. on

D. in

答案：

A. to

B. for

C. on

(答案→)D. in

解析：考查介词。这里考查介词短语的固定搭配，in small groups三五成群。句意：老师要求学生分成小组做这项实验。故D正确。