问题补充:
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
答案:
A. hand them out
B. hand them in
(答案→)C. hand it in
D. hand it out
解析: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。