【正文】 D．those18．You should make it a rule to leave things______you can find them again．A．when D．If8．Paper money was in______use in China when Marco Polo visited the country in______thirteenth century．A．the；不填ll see what I can do.　　A. When left 　　　　　　　　 B. Leaving　　C. If you leave 　　　　　　　D. Leave I stayed at a hotel while in New York.　 Oh, did you ? You _______with Barbara.　　A. could have stayed 　　　　B. could stay　　C. would stay 　　　　　　　　D. must have stayed 20. Shirley____ a book about China last year but I don39。t　　C. No, I have 　　　D. No, I haven39。 B. where C. which D. when21. t you meet him yet D. Haven39。there behind the door.A. is hanging B. to have goneC. going B. the。 16. Bthat C. That。we can39。 . A. didn39。t get D. had driven。t let me drive. oily food after the operation. A. to eat not D. were。 the international trade today. A. a。 D. I don39。 mustday you like。 bored D．tiring。t leave34．________is known to everybody, the moon travels round the earth once every month.A．It B．As C．That D．What 35．________such heavy pollution already, it may now be too late to clean up the river.A．Having suffered B．Suffering C．To suffer D．SufferedⅡ．Grammar Directions : Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best pletes the sentence .25．I earn 10 dollars hour as supermarket cashier on Saturdays . A．a(chǎn) …an B．the …a C．a(chǎn)n …a D．a(chǎn)n…the 26．The conference has been held to discuss the effects of tourism the wildlife in the area . A．in B．on C．a(chǎn)t D．with 27．Shanghai is really a fascinating city and we’ve decided to stay for two weeks . A．a(chǎn)nother B．other C．the other D．other’s 28．The young dancers looked so charming in their beautiful clothes that we took pictures of them . A．many of B．masses of C．the number of D．a(chǎn) large amount of 29．How you say that you really understand the whole story if you have covered only part of the article ? A．can B．must C．need D．may 30．It is believed that if a book is , it will surely the reader . A．interested …interest B．interesting …be interested C．interested …be interesting D．interesting…interest 31．The house rent is expensive . I’ve got about half the space I had at home and I’m paying here . A．a(chǎn)s three times much B．a(chǎn)s much three times C．much as three times D．three times as much 32．I thought Jim would say something about his school report , but he it . A．doesn’t mention B．hadn’t mentioned C．didn’t mention D．hasn’t mentioned 33．—How far apart do they live ? — I know , they live in the same neighbourhood . A．As long as B．As far as C．As well as D．As often as 34．We were in when we left that we forgot the airline tickets . A．a(chǎn) rush so anxious B．a(chǎn) such anxious rush C．so an anxious rush D．such an anxious rush 35．A good storyteller must be able to hold his listeners’ curiosity he reaches the end of the story . A．when B．unless C．a(chǎn)fter D．until 36．It is these poisonous products can cause the symptoms of the flu , such as headache and aching muscles . A．who B．that C．how D．what 37．The discovery of new evidence led to . A．the thief having caught B．catch the thief C．the thief being caught D．the thief to be caught 38．Only when your identity has been checked , . A．you are allowed in B．you will be allowed in C．will you allow in D．will you be allowed in 39．Generally speaking , according to the directions , the drug has no side effect . A．when taking B．when taken C．when to take D．when to be taken 40．It is pretty well understood controls the flow of carbon dioxide in and out the atmosphere today . A．that B．when C．what D．how 41．I can think of many cases student