A.Can’t | B.Must | C.May | D.won’t |
A.must | B.should | C.might | D.Could |
A.mustn’t have been blamed | B.shouldn’t be blamed |
C.wouldn’t have been blamed | D.couldn’t be blamed |
A.must; when | B.can; while | C.will; as | D.should; though |
A.may | B.should | C.will | D.Can |
A.could | B.shall | C.may | D.can |
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