38.He thinks he＇d better ()art since his intellect is not good for science.

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.( )

32.We can accept your order () payment is made in advance.( )

31.When he was questioned about the missing ring， he firmly_ that he had ever seen it.( )

30.She was very interested in the work of certain charities， and made a regular()to them.( )

29.() money， she is quite rich. However this does not mean that she is happy.( )

28.She simply () that the check was good and did not ask him any question about it.( )