47.I make a lot of research on this subject.

46.Thank to your help,I could finish the work in time.

45.My book’s v______ finished; I’ve only a few last-minute change to make to it.

44.A d______is a discussion between sides with different views.

43.I am very e______of your new work.I wish I had a job like that.

42.This car’s steering is not very r______;That is,you have to turn it hard to get the car to change direction.

41.She is p______at operating the computer.She is well practiced.

40.The first computer is a ______(巨大的)and stationary machine.

39.He is so fat and old that he is always doing some ______(笨拙的)movements.

38.It is reported that the business______(总计)a billion dollars this year.