1）It is no good _____to come now. He is busy. a.a. asking him b. to ask him c. if you ask him d. that you ask him
2）He was lucky to escape _____to prison. b.a. being sent b. sending c. to be sent d. sent
3）He is very busy _____his papers. He is far too busy ____callers. a. to write …to receive c. writing …to receive b. writing… receiving d. to write… for receiving
4）Henry Ford’s introduction of the assembly line vastly reduced the time it took _______. a. to make a car b. making a car c. for making a car d. while making a car
5）The suspect at last admitted ____stolen goods but denied _____them. a. to receive… to sell b. receiving…selling c. to receiving… to selling d. to have received… to have sold
6）My younger brother couldn’t help ____ when his toy plane fell into the river. a. but to cry b. but crying c. to cry d. crying 来源：www.examda.com 7）They are going to help _____ the trees. a. watering b. water c. watered d. while watering
8）“How about ____ me a hand? ” “Sure. I’d be glad to help.” a. give b. to give c. giving d. you give
9）“My girl friend is in a bad mood.” “Why ____ her some flowers?” a. not give b. not giving c. you don’t give d. don’t give
10）The music was so ____ that the audience were ___ to death. a. boring…bored b. bored…boring c. bored…bored d. boring… boring
11）Did you smell something _______? a. burntb. to burn c. burning d. to be burning
12）John was caught ___ his neighbor’s apple the other day. a. to have stolen b. stealing c. to steel d. having stolen
13）She is going to town _____. a. to repair her watch b. to have repair her watch c. to have her watch repaired d. for repairing her watch
14）When visiting a foreign country, I sometimes found it difficult ______. a.to make myself understood 来源：www.examda.com b. to make others understand myself c. to make myself understand d. making others understand myself
15）There was so much noise outside that the speaker could hardly _____. c.a. make the audience hear b. make the audience hearing him d. c. make himself hear d. make himself heard
16）Scientists think laser ______ one of the most useful tools in use today. a. being b. to be c. as being d. be
17）When you were talking to the policeman, I saw a teenager ______. e.getting on your car and driving off b. got on your car and drive off f.getting on your car and drive off d. get on your car and drive off
18）“I’m hungry and I want to eat the bread.” “What! It is no good ______.” g.for eating b. to be eaten c. to eat d. eating
19）Because air pollution has been greatly reduced, this city is still _______. h.a good place to live b. a good place for living in c. a good place to be lived in d. a good place to live in
20）Mary is a turner. She spent three years in a factory ____ for the job. a.to be trained b. training c. for being trained d. being trained