A.must have waited | B.might have waited |
C.would have waited | D.could have waited |
A.must | B.shall | C.will | D.Should |
A.should | B.will | C.shall | D.Would |
A.can you | B.will you | C.shall we | D.may we |
A. should | B.might | C.must | D.can |
A.shouldn’t | B.mustn’t | C.can’t | D.needn’t |
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