22．The Chinese are proud of the 29th Olympic Games （hold）in Beijing in 2008．
21． （put）into use in April 2000，the hotline was meant for residents reporting water and heating supply breakdowns．
20． （wait）in the queue for half an hour, I suddenly realized that I hadn’t had any money with me．
19．My teacher encouraged me （take）a summer course to improve my English．
18． （give）enough time，he’ll make a first-class tennis player．
17．With more and more new drugs （develop），doctors don’t find it so difficult to treat patients．
16．It’s really a good film，but I've never seen it （show）on TV
15．It is the end of my tiring day, and I really appreciate （have）time to relax．
14． （arrive）in London，James turned on the radio in the hotel room to listen to the weather report．
13．Your hair needs （cut）．，You’d better have it done tomorrow．