He _____ a hard life, but he _____ us a lot of excellent works.
  A. had led; had left     B. led; has left      C. had led; has left     D. led; was leaving

He ________ a hard life, but he ________ us a lot of excellent works．

1. A.
   had led; had left
2. B.
   had; has left
3. C.
   had led; has left
4. D.
   led; was leaving