47. He told the story so _______that everyone enjoyed it very much.

A) usefully　　　　　　　　 B) attractively　　　　　　　 C) mainly　　　　　　　　 D) bravely

46. The computer enables us to get more information about the world without leaving home. The underlined part means "_______'".

A) makes it safe for　　　　　　　　　　　　　　　　　　 B) makes it possible for

C) makes it necessary for　　　　　　　　　　　　　　　　 D) makes it enjoyable for

45. Everyone knows fire is very useful in our daily life, ________it is also dangerous.

A) but　　　　　　　　　　 B)or　　　　　　　　　　　 C) unless　　　　　　　　 D)so

44._______you have made up your mind to lose weight, you'd better eat less in the evening.

A) Since　　　　　　　　　 B) Although　　　　　　　　 C) Unless　　　　　　　　 D) Until

43. You _______worry about your study. We will help you if necessary.

A) don't need　　　　　　　 B) needn't　　　　　　　　　 C) needn't to　　　　　　　 D) need to

42. All the supermarkets in Shanghai have stopped _______free plastic bags since 2008.

A) provide　　　　　　　　 B) to provide　　　　　　　　 C) providing　　　　　　　 D) provided

41. An operating room in a hospital should be _______clean.

A) recently　　　　　　　 B) importantly　　　　 　　　　C) quickly　　　　　　　　 D) spotlessly

40. Of all the students in our class. Jane works _______.

A) harder　　　　　　　　 B) hard　　　　　　　　　　 C) very hard　　　　　　　 D) hardest

39. Nowadays it is convenient for us _______many things on line.

A) buy　　　　　　　　　 B) bought　　　　　　　　　 C) buying　　　　　　　　 D) to buy

38. I won't see the film this evening because I _______it already.

A) will see　　　　　　　 B) saw　　　　　　　　　　 C) have seen　　　　　　　 D) had seen