A.would, at | B.used to, × | C.would, × | D.used to, at |
A.couldn’t have enjoyed | B.shouldn’t have enjoyed |
C.needn’t have enjoyed | D.can’t have enjoyed |
A.ought to | B.must | C.couldn’t | D.needn’t |
A.must have failed | B.might fail | C.could have failed | D.should fail |
A.can | B.must | C.should | D.might |
A.can’t | B.mustn’t | C.won’t | D.shouldn’t |
© 2017-2019 超级试练试题库,All Rights Reserved.