问题
Who’s that man? Is he Mr. Brown?——Thatbe Mr. Brown. He never walks this way.
A:can’t
B:mustn’t
C:must
D:can
B:mustn’t
C:must
D:can
正确答案是：
同类题型
He was afraid ______ making friends with anyone.[ ]
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Don’t lie.You are _______ honest boy.
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