19.　 Before ___, you must check the machines.

A. using them　 B. having used　 C. use them　 D. being used

18.　 ___ made us disappointed.

A.　　 Her not coming back B. Not her coming back

C. She didn’t come back D. She not coming back

17.　 Is the bus driver used to ___ in all kinds of weather?

A.　 drive　 b. driving　 C. drove　 D. be driving

16.　 It was no use ___ that I had not seen him, so I stopped ___ and turned to him.

A.　 to pretend, to walk　 B. pretend, walking　 C. pretending, to walk　 D. pretending, walking

15.　 ___ the picture, she couldn’t help ___.

　 A. Seen, laughed at　 B. Seeing, laughing　 C. Seen, laughing　 D. Being seen, to laugh

14.　 --- Do you ask him to join in the work?

--- No, they often help others without ___.

　 A. be asking　 B. being asked　 C. to ask　 D. asked

13.　 ---Do you feel like ___ there or shall we take a bus?

--- I’d like to walk. But since there isn’t much time left, I’d rather you ___ a taxi.

　 A. walking, hire　 B. to walk, hire　 C. to walk, hired　 D. walking, hired

12.　 During the year, the president turned his attention to ___ agriculture.

A. improve　 B. improving　 C. improved　 D. improvement

11.　 --- You should say sorry to your sister.

--- Yes, I regret ___ with her.

A.　 quarrelling　 B. to quarrel　 C. qurrelled　 D. to be quarrelled

10.　 ___ his manners, he put his feet up to the desk.

A. Forgotten　 B. Being forgetting　 C. Forgetting　 D. To forget