5.(　 ) _______ Tim’s help, I found my pet dog in the end. I should say thanks to him.　

　　　 A. Along with　 　　　 B. Without 　　　　　 C. Thanks to　　　　　 D. Because　　　　　　

4.(　 )　 Mrs. White isn’t feeling well these days. She has made _____ with the doctor at three this afternoon.

A. a movement　　　　　　　　　　　　　　 B. an interview　　　

C. an appointment 　　　　　　　　　　　 D. a decision　　　　 　　　　　　　

3.(　 ) The _____ traffic stopped me from going to school on time yesterday. I was late!　　　　

A. heavy　　　　　 B. crowded　　　　　　 C. fast　　　　　　　　　　　　　 D. quick

2.(　 )　 In hot summer, we should pay attention to protecting ourselves _____ strong sunlight.

　　　 A. from　　　　　　　　　 B. for　　　　　　　　　　 C. with　　　　　　　　　　　　 D. to

从每小题所给的四个选项中，选出可以填入空白处的最佳答案。

1.(　 ) Beijing has got 　　　　population of more than 13.8 million.

　　　 A. the　　　　　　　　　　 B. a　　　　　　　　　　　 C. an　　　　 　　　　　　 D. /

50. It is certain that men will never stop ______ new energy sources to power their growing industry.

a. finding　　 b. to find　　 c. having found　　 d. found

49. The machines are made ______ at full speed.

a. work　　 b. working　　 c. to work 　　d. to be worked

48. You’d better ______.

a. to have your shoes mended　　 b. to have mended your shoes

c. have your shoes mended　　　 d. having your shoes mended

47. While she was shopping, she kept ______ the list to make sure she hadn’t forgotten anything.

a. checked　　 b. checking　　 　c. to check　　 d. check

46. The young man who saw the car ______ into the river telephoned the police station.

a. plunge　　 b. plunged　　 c. was plunging　　 d. to plunge