18. An army spokesman stressed that all the soldiers had been ordered _____clear warnings before firing any shots.　　 A .to issue　 B. being issued　 C. to have issued　　 D. to be issued

17. I don’t know whether you happen_______, but I am going to study in the U.S.A this September.　　 A to be heard　 B to be bearing　 C to hear　 D to have heard

16. The purpose of new technology is to make life easier, ____it more difficult.

A .not making　 B. not make　 C .not to make　 D. not to be made

15. This company was the first ____ portable radios as well as cassette tape recorders in the world.

A. producing　 B. to produce　 C. having produced　 D. produced

14. Little Jim should love _______ to the theatre this evening. 　A. to be taken　 B. to take 　C. being taken　 D. taking

13. Rather than _______ on a crowded bus, he always prefers _______ a bicycle. 　A. ride； ride 　B. riding； ride　　 C. ride； to ride　　D. to ride； riding

12. This problem is said _____ three times. A. to have been talkedB. to have discussed C. having been discussed　D. to have been talked about

11. He reached the station _____ only _____ that the train had just left. 　A. tired； learned　　B. tiring； learning　 C. to tire； to learn　D. tired； to learn

10. The problem _______ at tomorrow’s meeting is a very difficult one. 　A. being discussed　　 B. discussed　　 C. to be discussed　　 D. to discuss

9. I’m hungry. Get me something _________.　A. eat 　B. to eat C. eating D. for eating