1. His success was because of ________ he had been working hard.
   A. that   B. the fact which   C. the fact that   D. the fact
2. -Is Mary from New York City?
   -I don't know _______.
   A. from what city does she come from
   B. from what city she come
   C. what city does she come from
   D. what city she comes from
3. ________ makes mistakes must correct them.
   A. What    B. That    C. Whoever    D. Whatever
4. The reason why I didn't go to Shanghai was ________ a new job.
   A. because I got   B. because of getting
   C. I got           D. that I got
5. It worried her a bit ________ her hair was turning grey.
   A. while    B. that    C. if    D. for
6. Henry killed the dog. I'll ask him why ________.
   A. did he do that    B. he did that
   C. he did    D. he has done so
7. Have you seen Henry lately? My boss wants to know ________.
   A. how he is getting along
   B. how is he getting along
   C. what he is getting along
   D. what is he getting along