A.must | B.has to | C.should | D.may |
A.may | B.ought to | C.must | D.should |
A.will | B.should | C.must | D.would |
A.must send | B.be sent | C.would be sent | D.should send |
A.mustn’t | B.needn’t | C.can’t | D.wouldn’t |
A.shouldn’t | B.mustn’t | C.wouldn’t | D.couldn’t |
© 2017-2019 超级试练试题库,All Rights Reserved.