8. Britain returned Hong Kong to China in 1997, ______ decades of negotiations. ѧ¿ÆÍø A. ended B. to end C. ending D. having ended ѧ¿ÆÍø 9. They seldom, ______, pay for software they use every day. That is, they use lots of pirated software. ѧ¿ÆÍø A. if some B. if ever C. if any D. if never ѧ¿ÆÍø 10. Tim Bemers-Lee is generally considered ______ the World Wide Web, on which all the information is shared by all. ѧ¿ÆÍø A. to have founded B. having founded C. founding D. to found ѧ¿ÆÍø 11. ---What was it that you had ______ last night? It was too noisy. ѧ¿ÆÍø ---Oh, sorry. It was the washer and it won¡¯t happen again. ѧ¿ÆÍø A. work B. working C. to work D. worked ѧ¿ÆÍø 12. In the families with kids, parents usually put medicine ______ children can¡¯t reach. ѧ¿ÆÍø A. what B. that C. which D. where ѧ¿ÆÍø 13. ______ you eat the correct foods ______ be able to keep fit and stay healthy. ѧ¿ÆÍø A. Only if; will you B. Only if; you will ѧ¿ÆÍø C. If only; will you D. Unless; you will ѧ¿ÆÍø 14. We¡¯re happy that our predictions ______ so accurate, which is far from expectation. ѧ¿ÆÍø A. might be B. would be C. should be D. will be ѧ¿ÆÍø 15. I was working at my paper last night when the lamp ______. ѧ¿ÆÍø A. went out B. went off C. went away D. went over ѧ¿ÆÍø 16. The government has taken some measures to solve the shortage of electricity, but it may be some time ______ we have enough power. ѧ¿ÆÍø A. since B. after C. unless D. before ѧ¿ÆÍø 17. Oh, it¡¯s so cold here. Somebody ______ the window, please. ѧ¿ÆÍø A. closes B. close C. shall close D. will close ѧ¿ÆÍø 18. ---Who should be responsible for the accident? ѧ¿ÆÍø ---The boss, not the workers. They just carried out the order ______. ѧ¿ÆÍø A. as told to B. as are told to C. as telling to D. as they told to ѧ¿ÆÍø 19. You should treat him (in) the way ______ suits him most. ѧ¿ÆÍø A. that B. in which C. / D. why ѧ¿ÆÍø 20. ---Don¡¯t you think it necessary that he ______ to Ningbo but to Shanghai? ѧ¿ÆÍø ---I agree, but the problem is ______ he has refused to. ѧ¿ÆÍø A. will not be sent; that B. not be sent; that ѧ¿ÆÍø C. should not be sent; what D. should not send; what ѧ¿ÆÍø