问题
Who’s that man over there standing in the garden? Is it Mr. White?—It __________ be him. He has gone to Shanghai on business.
A:shouldn’t
B:may
C:can’t
D:must
B:may
C:can’t
D:must
正确答案是：
同类题型
Tom needs some help ______ his homework. Can you help ______? [ ]
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___of them has a dictionary and ___one of them can look up words in the dictionary