A.may | B.should | C.could | D.need |
A.must stop | B.should stop | C.must have stopped | D.should have stopped |
A.need | B.must | C.may | D.will |
A.mustn’t | B.can’t | C.may not | D.don’t have to |
A.should get up | B.should have studied |
C.must have studied | D.should have got up |
A.mustn’t | B.can’t | C.don’t have to | D.had better not |
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