问题
The man in a black suit _______ be our youth worker. — I’m sure it _____ be him. I saw him in the laboratory building some minutes ago.
A:must; can’t
B:can; mustn’t
C:can; could
D:must; won’t
B:can; mustn’t
C:can; could
D:must; won’t
正确答案是：
同类题型
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