17.I saw Mr. Smith last Sunday. We had not seen each other ________ I left London.
A. as B. before
C. since D. till
16.English and French are taught here. You can choose ________ you like.
A. no matter which B. whichever
C. which D. whatever
15.________ you are so weak, you’d better stay at home.
A. Since B. For
C. Because D. Though
14.-Are you thinking about going to New York for the holiday?
-No. But if I ________ the time, I would definitely go.
A. have B. had
C. have had D. would have
13.________ you may do, you must do it well.
A. Which B. Whenever
C. Whatever D. When
12.No matter ________ hard it may be, I will carry it out.
A. what B. whatever
C. how D. however
11.We must hurry up ________ catch up with the last train.
A. that B. so that to
C. in order that D. in order to
10.It is ten years ________ he smoked.
A. that B. when
C. since D. while
9.-Don’t look down upon Bob. He has his own advantages.
-Oh, yes. ________ others are weak, he is strong.
A. If B. When
C. Where D. Though
8.Someone called me up in the middle of the night, but they hung up ________ I could answer the phone.
A. as B. since
C. until D. before