A.could do | B.would do | C.could have done | D.must have done |
A.did | B.would | C.will | D.Had |
A.might lose | B.must have lost | C.would have lost | D.should have lost |
A.may stay | B.could stay |
C.should have stayed | D.must have stayed |
A.needn’t | B.should | C.must | D.Cannot |
A.should be finished | B.should finish |
C.should have finished | D.ought to have been finished |
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