问题

Mr. Smith is always on time for everything. How ____ it be that he was late for the important meeting
A:should
B:can
C:may
D:must;
B:can
C:may
D:must;
正确答案是:
同类题型
do you think of his newly-published book—It’s the best one he ________, but that’s not saying much.
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I have no idea____________ the book is__________ to your English study