17．Nuclear energy can be used to __ electricity.

　　 A. producing　 　　　B. produce　 　　　　　C. be produce　 　　　D. Being produced

16．You can come here to ask me___ if you have any questions.

A. at one time　 　　　B. at a time　 　　　　C. at any time　 　　　　D. all the time

15. The teacher asked us ____ so much noise.

　　 A. don’t make　 　　　B. not make　 　　　　C. not making　 　　　D. not to make

14. ____ late in the afternoon, Bob turned off the alarm.

　　 A. To sleep　 　　　　B. Sleeping　 　　　　C. Sleep　 　　　　　D. Having sleep

13. Little Jim should love ____ to the theatre this evening.

　　 A. to be taken 　　　　B. to take　 　　　　　C. being taken　 　　　D. taking

12. Charles Babbage is generally considered ____the first computer.

　　 A. to invent　 　　　　B. inventing　 　　　　C. to have invented　 　D. having invented

11. I would love ____ to the party last night but I had to work extra hours to finish a report.　　 A. to go　 　　　　　　B. to have gone　 　　C. going　 　　　　　D. having gone

10. The patient was warned ____ oily food after the operation.

　　 A. to eat not　 　　　　B. eating not　 　　　　C. not to eat　 　　　　D. not eating

9. The boy wanted to ride his bicycle in the street, but his mother told him ____.

　　 A. not to 　　　　　　B. not to do　 　　　　C. not do it　 　　　　D. do not to

8. We agreed ____ here but so far she hasn’t turned up yet.

　　 A. having met　 　　　　B. meeting　 　　　　　C. to meet　 　　　　　D. to have met