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closed D. /。 closed B. does。 of you( )45The teacher made him___ his homework.A. to do B. do C. did D. done( ) 46 The boy___ streets without pay in the old days.A. was made to clean B. made clean C. made to clean D. was made clean( ) 47 These children____dance.A. were seen to B. were seen for C. were seen D. saw to( ) 48 Thesestones___well.A. are fitted B. fit C. fits D. is fitted( )49 The bike ___ 500 yuan.A. was cost B. costed C. cost D. is costed( )50 The important meeting ___ on a cold morning last year.A. was had B. was held C. held D. had( ) 51 Great changes___ in the past ten years in China.A. took place B. have taken place C. were taking place D. hadtaken place( ) 52 You can39。 of C. take。 keep( )29Tea ___ in the south of China.A. grows B. is grown C. were grown D. will grow( ) 30 The bridges___ two years ago.A. is built B. built C. were built D. was built( ) 31 Wet clothes are often ___ up near a fire in rainy weather.A. hang B. hanged C. hanging D. hung( )32 The river smells terrible. People must ___ dirty things into it.A. be stopped to throw B. be stopped from throwingC. stop to throw D. stop from throwing( ) 33 The teapot ___ water.A. is filled with B. filled of C. fulling of D. filled( ) 34Old people must be looked after well and ___ politely.A. speak to B. spoken C. speak D. spoken to( ) 35 Old people must ___.A. look after well B. be looked well afterC. looked well after D. be looked after well( ) 36 Newlyborn babies___in hospital.A. are taken good care B. are taken good care ofC. take good care of D. take good care( )37 They were___ at the sudden noise.A. frightening B. frightened C. frighten D. frightens( ) 38These w