A、Might John
B、May John have
C、Could John have
D、Can John
第1题
A.Must he have
B.Might he have
C.Had he
D.Should he have
第2题
A.should finish
B.must have finished
C.could be finishing
D.ought to have been finished
第3题
第4题
A.must have thrown
B.mustn't have thrown
C.couldn't have thrown
D.wouldn't have thrown
第5题
A.will work
B.may work
C.must have worked
D.could have worked
第6题
A.will work
B.may work
C.must have worked
D.could have worked
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