17. --Have you been here before?

　 -- Yes, it’s the second time ______ I ______ the Great Wall.

　　 A. when; visited　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. that; visited　　　　　　

　　 C. when; have visited　　　　　　　　　　　　　　　　　　　　　　 D. that; have visited

16. I was very busy yesterday, otherwise I ______to the meeting.

　A. came　　　　　　　　　　　　　 B. would have come 　　 C. had come 　　　　　　　 D. would come

15. Oil prices fell this week to their lowest level in fourteen months, ______ because of over-production.

　　 A. appropriately　　　　　 B. extremely　　　　　　　　　　 C. apparently　　　　　　　 D. strongly

14. Little as he is, Tom, like his parents, ______ others who are in need.

　　 A. are always helping　　　　　　　　　　　　　　　　　　　　　　 B. has always helped

　　 C. is always helping　　　　　　　　　　　　　　　　　　　　　　　 D. have always helped

13. ______ you are a college student, you should learn to be independent of your parents’ help.

　　 A. Now that　　　　　　　　 B. While　　　　　　　　　　　　　　 C. Unless　　　　　　　　　　　 D. Even though

12. In most parents’ eyes, what a child should do, ______, is to do well in his studies.

　　 A. first of all　　　　　　　　 B. above all　　　　　　　　　　　 C. after all　　　　　　　　　　 D. in all

11. It is reported that the medical team has already reached ______ is regarded as the most dangerous area.

　　 A. where　　　　　　　　　　　 B. which　　　　　　　　　　　　　　 C. what　　　　　　　　　　　　 D. as

10. It has been rather expensive to bring in these machines, but it should ______ in the long run.

　　 A. work out　　　　　　　　　 B. pay off　　　　　　　　　　　　　 C. turn out　　　　　　　　　　 D. come back

9. I sat down to read the postcard, ______ a note from someone back home.

　　 A. expecting　　　　　　　　 B. expected　　　　　　　　　　　 C. to expect　　　　　　　　 D. having expected

8. We needed to get to London but we had no ______ of transport.

　　 A. way　　　　　　　　　　　　　 B. method　　　　　　　　　　　　 C. approach　　　　　　　　 D. means