20. So many doctors _____ , the board meeting had to be put off. A. were absent B. been absent C. had been absent D. being absent ...

8. Her health has been affected, and may ___ altogether if the train continues. A. break down B. break off C. break out D. break up ...

38. Because of the strike, British Rail has been forced to _____ all trains to London. A. cancle B. abandon C. postpone D. recall ...

30. Scientists say that many factors _____ changes in the weather. A. bring off B. bring about C. bring in D. bring forward ...

19. 3. The____ ratio of world population growth is the result of recent advances in medical science. A. increasing B. increased C. increase D. increasingly ...

10. 1. Although it was 30 years ago, I can still remember_____ taken to the seaside for my summer holidays. A. to be B. had been C. being D. was ...

22. 10 What a ___ piece of work! A. skill B. skilled C. skillful D. skillfully ...

10. we will find a lot of time and ways to go over your reading in class before the ___ time. A. due B. precise C. exact D. correct ...

2. （_）his wealth,he is not happy. A. Except for B. In spite for C. Because of D. Besides ...

27. The new building ___ all the other buildings in the town. A. dwarfs B. distorts C. deserts D. depresses ...