问题

He is a badtempered man, but he ________ be quite charming when he is cheerful.[ ]
A:shall
B:must
C:dare
D:can
B:must
C:dare
D:can
正确答案是:
同类题型
Jane likes to give her students a lot of_______ on how to improve their English.
Would you ever let him work hereagain—!Not after the way he treated me.
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