Mr Smith _________ a book about China last year but I don’t know whether he has finished it.

A. has written B. wrote  C. had written D. was writing

Mr Smith ______ a book about China last year but I don’t know whether he has finished it.

   A. has written     B. wrote      C. had written      D. was writing

Mr Smith ______ a book about China last year but I don’t know whether he has finished it.

A. has written　　　　　　　 B. wrote

C. had written　　　　　　　 D. was writing

Mr Smith _________ a book about China last year but I don’t know whether he has finished it.

1. A.
   has written
2. B.
   wrote
3. C.
   had written
4. D.
   was writing

Mr Smith ______ a book about China last year but I don’t know whether he has finished it.

    A. has written                         B. wrote

    C. had written                         D. was writing