The work is too hard for him. He _______ finish it on time.[ ]A. can't B. mustn't C. shoul
[ ]
题目简介
The work is too hard for him. He _______ finish it on time.[ ]A. can't B. mustn't C. shoul
题目详情
[ ]
B. mustn't
C. shouldn't
D. needn't
答案