Question

Please       at once after all of you have finished your homework.

A．hand them out

B．hand them in

C．hand it in

D．hand it out

Answer 1

C

试题分析：句意：请在你们都完成家庭作业后，马上交上。homework 为不可数名词，应该用it代替。hand in上交；hand out伸出。选C。
考点: 考查动词短语的用法。