A.must | B.needn’t | C.can | D.shouldn’t |
A.mustn"t; has gone | B.mustn"t; has been |
C.can"t; has gone | D.can"t; has been |
A.can | B.may | C.might | D.must |
A.must | B.can | C.need | D.should |
A.shouldn’t | B.mustn’t | C.needn’t | D.can’t |
© 2017-2019 超级试练试题库,All Rights Reserved.