15._______ such heavy pollution already, it may now be too late to clean up the river.(NMET2001　 35)

　　 A.Having suffered　　　　 B.Suffering　　　　 C.To suffer　　 D.Suffered

14.The managers discussed the plan that they would like to see ______ the next year.(NMET2000　 22)

　　 A.carry out　　　 B.carrying out　　　　 C.carried out　　　　 D. to carry out

13.I've worked with children before, so I know what______ in my new job.(NMET2000　 19)

　　 A.expected　　　　　　 B.to expect　　　　 C.to be expecting　　　　 D.expects

12.Let Harry play with your toys as well, Clare--- you must learn to ______.(NMET2000　 12)

　　 A.support　　　　　 B.care　　　　　 C.spare　　　　 D.share

11. ______ some of this juice---perhaps you'll like it. (2000北京春招　 23)

　　 A. Trying　　 B. Try　　　 C. To try　　 D. Having tried

10. A computer does only what thinking people ______.　 (99上海　 19)

　　 A. have it do　　　　　　　 B. have it done　　　　　 C. have done it　　　　　　 D. having it done

9. When I got back home I saw a message pinned to the door____ "Sorry to miss you; will call later".

　　　 A. read　　　 B. reads　　 C. to read　　 D. reading　　　　　　 (NMET92　 25)

8. The purpose of new technologies is to make life easier, ________it more difficult.(NMET99　 21)

　　 A. not make　　　　　　　 B. not to make　　　　　 C. not making　　　　　　 D. do not make

7. What worried the child most was ______ to visit his mother in the hospital.(98上海　 8)

　　 A. his not allowing　　　　　　　　　　　　　　　　　 B. his not being allowed

　　 C. his being not allowed　　 　　　　　　　　　　　　　　D. having not been allowed

6. European football is played in 80 countries, ______ it the most popular sport in the world. (NMET98　 25)

　　 A. making　　 B. makes　　 C. made　　 D. to make