( )28.he first heard of the chemist.

　　A. That was from the teacher that

　　B. It was the teacher whom

　　C. It was from the teacher that

　　D. That was the teacher whom

　　( )29. Passengers are advised not their bags unattende

　　A. having left

　　B. to leave

　　C. leave

　　D. leaving

　　( )30. has been pointed out before， air pollution is becoming more and more serious in large cities.

　　A.That

　　B. What

　　C. Which

　　D. As

　　( )31.Your mother ____for you everywher

　　E. Where have you been?

　　A.had looked

　　B.has been looking

　　C.looked

　　D.was looking

　　( )32.Mr. Wilson asked me if thse islands_________Italy.

　　A.have been belonged to

　　B.are belong to

　　C.belong to

　　D.belonged to

　　( )33.He _______TV when I dropped in last night.

　　A.was watching

　　B.had watched

　　C.watched

　　D.have been watching

　　( )34.He ______many experiences he ever_____in his childhoo

　　A.gradually forget; had

　　B.is gradually forgetting; had

　　C.was gradually forgetting; had had

　　D.have gradually forgotten; had

　　( )35.Accidents happened frequently at that section of the road， but no accidents_____since last winter.

　　A.have accurred

　　B.doesn't have

　　C.didn't have

　　D.hasn't have

　　( )36.When he_____a new word in reading he_____consult the dictionary immediately.

　　A.comes across;likes to

　　B.came across;like to

　　C.has come across; like to

　　D. comes across;like to

　　( )37.I hope that she______to the demands of the naughty boys.

　　A.will not have agreed

　　B.will not agree

　　C.will not be agreed

　　D.will not have been agreed

　　( )38."Is the monitor in?" "He _____to the library."

　　A.has been

　　B.has gone

　　C.goes

　　D.went

　　( )39.She gave me that notebook on my birthday， and I____it it in my drawer.

　　A.have since kept

　　B.since kept

　　C.am since keeping

　　D.had since kept

　　( )40.You ought to have put the milk in the refrigetor， now_____sour.

　　A.it is smelt

　　B.I smelt

　　C.it smells

　　D.it was smelling

　　( )41.I bought the bread last week. It_____stal

　　E. You'd better not take it now.

　　A.is going

　　B.was

　　C.had been

　　D.is about to

　　( )42.He had already known the news before I _____him of it.

　　A.had informed

　　B.could inform

　　C.would inform

　　D.have informed

　　( )43.He_____for six years by the time he takes the IELTS examination next week.

　　A.studied English

　　B.had been studying English

　　C.studies English

　　D.will have been studying English

　　( )44.The school authorities and teachers _____over the advantages and disadvantages of the educational system.

　　A.were always argued

　　B.were always arguing

　　C.had always argued

　　D.had always been argued

　　( )45.When I saw her smiling face， I knew she_____the first prize of the speech contest.

　　A.has

　　B.has had

　　C.had had

　　D.was having

　　( )46.The united States______fifty states.

　　A.consisted of

　　B.is consisted of

　　C.consistes of

　　D.consists

　　( )47.The Chinese food_____delicious.

　　A.are tasted

　　B.taste

　　C.is tasted

　　D.tastes

　　( )48.Your hair needs_____. You'd better have it_____tomorrow.

　　A.cutting; done

　　B.cutting;to be done

　　C.being cut;done

　　D.to be cut;to be done

　　( )49._______，wood will soon burst into a flam

　　A.Heating

　　B.when heating

　　C.Being heated

　　D.When heated

　　( )50."How do you like your new position?" "I_____with it."

　　A.don't satisfy

　　B.am not satisfied

　　C.can't satisfy

　　D.haven't satisfy

　　( )51.there are more than fifty proposals______at the conferenc

　　A.discussed

　　B.to be discussed

　　C.discussing

　　D.having discussed