A.have had
B.had had
C.have
D.had
A.may not
B.needn't
C.can't
D.mustn't
开始考试点击查看答案A.could
B.would
C.must
D.need
开始考试点击查看答案A.will not be sent; that
B.not be sent; that
C.should not be sent; what
D.should not send; what
开始考试点击查看答案A.was happening
B.happens
C.has happened
D.happened
开始考试点击查看答案A.will put
B.will have put
C.would put
D.would have put
开始考试点击查看答案A.Can
B.Should
C.Must
D.Would
开始考试点击查看答案A.must
B.shall
C.may
D.need
开始考试点击查看答案A.is
B.were
C.has been
D.had been
开始考试点击查看答案A.can
B.might
C.would
D.need
开始考试点击查看答案A.couldn't
B.mustn't
C.shouldn't
D.needn't
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