33.He tried ()to start the old car.

42.You can＇t get across the river ()by swimming.( )

41.Why do you look so()? You never smile or look cheerful.( )

40. She could hardly () laughing .( )

39.() it is a good thing I did not get that post I applied for， though I must admit that I was disappointed at the time.( )

38.The only thing () really bothers us is whether we will have access to the resources room of the department.( )

37.Topics for conversation should be()to the experiences and interests of the students.( )

36.You＇d better () the sleeves of this coat;they are too long.( )

35.Until the beginning of the Industrial Revolution， man＇s knowledge of the physical world().( )

34_ your letter， I am pleased to inform you that your plans are quite acceptable to us.( )

33.Why can＇t you and Bill go to the movies tonight? -We are ()a history test tomorrow.( )