He______ on this paper for ten minutes but he______only about sixty words.

  A. will have worked, has written    B. worked, has written

  C. has been working, has written    D. will be working, works

He______ on this paper for ten minutes but he______only about sixty words.

  A. will have worked, has written           B. worked, has written

  C. has been working, has written          D. will be working, works

He______ on this paper for ten minutes but he______only about sixty words.

1. A.
   will have worked, has written
2. B.
   worked, has written
3. C.
   has been working, has written
4. D.
   will be working, works