Teachers required that all the students their homework all alone.A. must finishBwould

发布时间：2020-08-16 22:49:33

Teachers required that all the students      their homework all alone.     
A. must finish
Bwould finish
C. had to finish
D. finish

网友回答

A. must finish
B. would finish
C. had to finish
(答案→)D. finish
解析：考察虚拟语气。Require后面的宾语从句使用虚拟语气should do;should可以省略。故D正确。
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