1. I could speak ______ Japanese ______ Chinese, so I had to talk with him in English.
   A. not only; but also  B. both; and
   C. neither; nor  D. either; or
2. ______ they arrived early at the airport, they nearly missed their flight.
   A. If B. Because C. As soon as D. Although
3. Susan will not arrive at the airport on time ______ she hurries up.
   A. once B. if C. when D. unless
4. It’s a nice house ______ it hasn’t got a garden.
   A. and B. or C. but D. so
5. —Where is the comic book?
　—I brought it to you ______ you were in the reading room yesterday.
   A. when B. if C. because D. before
6. It is difficult for us to learn a lesson in life ______ we’ve actually had that lesson.
   A. when B. after C. since D. until
7. —What a surprise it is that you’ve hiked on Mount Tai!
　 —I didn’t believe I could do it ______ I got to the top.
   A. unless B. after C. until D. as
8. ______ he comes back, I’ll tell him.
   A. where B. How C. When D. What
9. —Hurry up. The bus is coming.
　 —Wait a minute. Don’t cross the street ______ the traffic lights are green.
   A. after B. until C. while D. since
10. —Do you think most of the people in Beijing can talk with foreigners in English?
　　—Yes, I think so, ______ the young ______ the old are learning to speak English. 
   A. Either; or B. Nither; Nor C. Between; and D. Not only; but also
11. These story books for children are awfully written. They are ______ interesting ______ exciting.
   A. either; or B. neither; nor C. both; and D. not only; but also
12. I like watching CCTV 4 ______ it can help me learn more about the world.
   A. if B. because C. though D. until
13. The lady donated a lot of money ______ she is not rich.
   A. if B. because C. though
14. We had to stay at home ______ it was raining heavily.
   A. because B. because of C. so
15. Just work hard, ______ your dream will come true.
   A. but B. and C. or