题目内容
----Look at the boy running on the playground. Is it David?
---- It ______ be him. I saw him go to the teachers’ office just now.
A.mustn’t B.can’t
C.may not D.needn’t
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题目内容
----Look at the boy running on the playground. Is it David?
---- It ______ be him. I saw him go to the teachers’ office just now.
A.mustn’t B.can’t
C.may not D.needn’t