19.The story was so funny that we ___________.

　　 A. couldn't help laugh　　　　　 B. can't but laugh

　　 C. couldn't help laughing　　　　 D. couldn't help but to laugh

18.His parents insist on ____________ to college.

　　 A. he should go　 B. he go　　　　　 C. his going　　　 D. him to go

17.Keep on _________ and you will succeed.

　　 A. a try　　　　 B. try　 　　　　　C. triing　　　　　 D. trying

16.We should often practise _________ English with each other.

　　 A. to speak　　　 B. spoke　　　　　 C. speak　　　　　 D. speaking

15. My brother keeps _________ me with my work.

　　 A. to help　　　 　B. help　　　　　 C. helping　　　　 D. helped

14. Jack said that he wouldn't mind ___________ for us.

　　 A. to wait　　　 B. wait　　　　　 C. waiting　　　　 D. waited

13. The classroom wants __________.

　　 A. clean　　　　 B. cleaned　　　　 C .to clean　　　　 D. cleaning

12. Have you forgotten ___________$1000 from me　 last　 month?　 Will　 you　 please remember _________ it tomorrow?

　 A. borrowing; to bring　　　 　　　　B. to borrow; bring

　 C. borrowed; bringing　　　 　　　D. borrowing ; bringing

11.It's no good ________ over split milk.

A. to cry　　　 B. crying　　　　　　 C. cried　　　 D. cry

10.It took the workmen only two hours to finish ________ my car.

　A. repairing　　 B. repair　　　　 C. to repair　　 　　D. repaired