A.have left | B.would leave | C.could leave | D.left |
A.has been | B.went | C.has gone | D.will go |
A.double | B.was doubling | C.has doubled | D.is doubled |
A.covering, falling | B.covered, falling | C.covered, fallen | D.covering, fallen |
A.fright | B.frightening | C.frightened | D.frighten |
© 2017-2019 超级试练试题库,All Rights Reserved.