14. He knows so much about the story. He must have read the book, _____?

A. mustn’t he       B. doesn’t he

C. hasn’t he        D. didn’t he

13. It is the first time that you have come to China, _____?

A. haven’t you            B. isn’t it

C. hasn’t it              D. aren’t you

—Look! Someone has spilt coffee on the carpet.

   —Well, it ________ me.

     A. isn’t                                    B. wasn’t

C. hasn’t been                               D. hadn’t been

She must have seen the blind man many times , ____ she ?

A . haven''t      B . didn''t     C . hasn''t      D . hadn''t

 —Did Alan enjoy seeing his old friends yesterday?

—Yes,he did.He ___ his old friends for a long time.

A.didn’t see                           B.wouldn’t see

C.hasn’t seen                          D.hadn’t seen