18. --Hi, Betty. Shall we go swimming this Sunday?

　 --This Sunday? I am sorry, I have a lot of homework ____ this Sunday.

A. to do　 　　　　 B. done　 　　　　　 C. do　 　　　　　　 D. to be done

17. Although Jeff loves KFC, he tries ____ it too often.　

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

16. Who do you think you’d like ____?

A. to make friends B. make friends C. to make friends with D. make friends with

15. When you leave, don’t forget ____ off the light.

A. to turn　 　　　 B. turning　 　　　 C. turn　 　　　　　 D. turned

14. It ____ Jack twenty minutes ____ the math problem yesterday.

A. took; to work out　 　　　　　　　　 B. takes; worked out　

C. has taken; work out　 　　　　　　　 D. is taking; working out

13. He stood there for two hours ____ the game.　

A. watched　 　　　 B. watching　 　　　 C. is watching　 　 D. was watching

12. Is it always easier ____ friends than to keep them?　

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

11. They were made ____ fourteen hours a day.　

A. work　 　　　　　 B. working　 　　　 C. worked　 　　　　 D. to work

10. Why not ____?

A. let him to go home　 　　　　　　　　 B. to let him go home　

C. let him go home　　 　　　　　　　　　 D. to let him to go home

9. The headmaster’s words are quite _____.

A. encouraged　 　　 B. encouragement　 C. encouraging　 D. encourage