10. Dark_____it was, we continued our way.
A. because
B. since
C. as
D. that

 
11. When you read the text you’d better make a mark_____you have any questions.
A. where
B. at which
C. the place where
D. at that

12. I wonder _____or not you will leave.
A. where
B. when
C. if
D. whether

13. _____how hard I pushed, the door would not open.
A. Even if
B. Since
C. Though
D. No matter

14. She didn’t look a bit tired_____she had walked a long way.
A. as
B. since
C. though
D. before

15. The whole staff consisted of about 100 doctors and nurses, nearly half_____were women.
A. of which
B. of who
C. who
D. of whom

16. This is the office_____my father worked.
A. in that
B. which
C. in which
D. in where

17._____he could not earn enough to support his family.
A. As hard as he worked
B. Hard as he worked
C. As he worked hard
D. Because he worked hard

18. He talks_____he were an expert in the field.
A. as
B. though
C. because
D. as if

19._____he is going to do it is not known yet.
A. How
B. What
C. That
D. If

参考答案:
10.C   11.A    12.D      13.D     14.C 
15.D   16.C    17.B      18.D     19.A