25. Scientists generally agree that earth’s climate will warm up over the next 50 to100 years______ it has warmed in the 20,000 years since Ice Age. A. so long as B. as much as C. as long as D. as well as ...

21. ____, he has to stay here. A. No matter he likes it B. however he likes it C. Whether he likes it or not D. Until he liked it ...

16. Dr. Smith insisted ____ for a month. A. I resting B. that I am resting C. that I rest D. me to rest ...

12. The plan ____ she had argued against turned out to be a great success, and he felt embarrassed. A. what B. which C. why D. when ...

8. Would you mind ____ here? A. we smoke B. us smoking C. our smoke D. we smoking ...

4. Many people in the west make ___ a rule to buy Christmas presents for their relatives and friends. A. this B. it C. that D. them ...

25. I don’t really work here. I___until the new secretary arrives. A. just help out B. have just helped out C. am just helping out D. will just help out ...

21. ______allowing for his age, he still acts very immaturely A. But B. Yet C. Although D. Even ...

17. I can not decide ___ to buy a new bike or ___a used one. A. when, find B. whether, to find C. how, look for D. why, to look for ...

13. We'd better spend a little ____money on fruits. It’s good for our health. A. much B. more C. less D. few ...