问题补充：
Teachers required that all the students their homework all alone.
A. must finish
Bwould finish
C. had to finish
D. finish
答案：
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。
如果觉得《Teachers required that all the students their homework all alone.A. must finishBwould》对你有帮助，请点赞、收藏，并留下你的观点哦！
