问题

I _____ have written to him because he phoned me shortly afterwards.
A:ought to
B:must
C:couldn’t
D:needn’t
B:must
C:couldn’t
D:needn’t
正确答案是:
同类题型
Pandas are native ______ China
The employee ____________ to impress the company with his cleverness and promptness.[ ]
-I hear you’ve got a new watch. ______ I have a look -Yes, you may.
This language training programme ____ teenagers whowant to go abroad to study
Thanks a lot for going out of your way me.—It’s my pleasure.