A.mustn’t | B.shan’t | C.needn’t | D.shouldn’t |
A.shall | B.will | C.can | D.would |
A.need | B. shall | C.have to | D.ought to |
A.needn’t have been | B.couldn’t have gone |
C.shouldn’t have been | D.shouldn’t have gone |
A.could stay | B.would stay | C.could have stayed | D.had stayed |
A.can | B.must | C.should | D.might |
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