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—Look! The man at the gate ______ be our headmaster. He is always standing there every morning.

—No, it ______be him. He is holding a meeting in the office now.

A.must, can’t                           B.must, mustn’t

C.can’t, can’t                          D.can’t, mustn’t

九年级英语单项填空中等难度题

少年,再来一题如何?
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