A.must | B.would | C.could | D.May |
A.mustn"t; should do | B.needn’t; should have done |
C.may not; should do | D.can"t; should have done |
A.wouldn’t | B.mustn’t | C.shouldn’t | D.needn’t |
A.would sell | B.used to sell | C.sold | D.insisted selling |
A.shall go | B.ought to have gone | C.should go | D.must have gone |
A.will | B.may | C.have to | D.should |
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