19.--I must apologize for _________ahead of time.

　 　--That’s all right.

A. letting you not know　　　　　　　 B. not letting you know

C. letting you not　　　　　　　　　　 D. letting not you know.

18.-- Haven’t I told you that the computer wants ______?

--Sorry, I forgot _______ it fixed. I’ll send it for repairs right away.

A. repairing; to have　　　　　　　 　　　　B. to repair; to have

C. repairing; having　　　　　　　　 　　　　D. to be repaired; having

17. Mr. Smith, _____of the _____ speech, started to read a novel to kill time.

A.　tired; boring　　　 B. tiring; bored　　 　 C. tired; bored　　　 D. tiring; boring

16. There is no ________ to worry, Mum. Everything will ________ to be all right.

　　　　　 A. way; turn up　　 B. need; turn out　　　　　 C. excuse; turn down 　　 D. chance; turn in

15. 　　　　in her most beautiful skirt, the girl tried to make herself　　　 at the party.

　　　　　 A. Dressed; noticed　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. Dressing; noticed

C. Dressed; noticing　　　　　　　　　　　　　　　　 D. Dressing; being noticing

14. It’s dangerous to let the children who are ________ go swimming in the river.

A. too young　　　　　　　　　　　　　　　　　　　　　 B. too young to　　 　　　 　　　　　　　　　　　 C. so young to　　 D. not old enough to

13. The international agreement, __________ children not to smoke and help people kick the habit, was signed on February 27.

A. being aimed to encourage 　　　　　 　B. to be aimed at encouraging

C. aimed at encouraging 　　　　　　　　　　　 　D. aiming to encourage

12. The invention of the modern computer is one of the great contributions _________ to man's efficiency.

　　　　　 A. having ever been made　　　　　　　　　　　 B. ever making

　　 C. ever made　　　　　　　　　　　　　　　　　　　　　 D. having ever made

11. _____you be interested, I’ll tell you the whole story.

　　 A. Would　　　　　　　　　　 　　　B. Might

　　 C. should　　　　　　　　　　　　　 D. Could

10. What I really want to know is that when the important meeting______.

　 　A. was to hold　　　　　　　　　　　 B. was holding

　　C. had held　　　　　　　　　　　　　 D. is to be held