Revise the use of gerunds and infinitives. Put the verbsin brackets

Revise the use of gerunds and infinitives. Put the verbs
in brackets in the correct form.
4. He urged us (work) faster.
5. I wish (see) the manager.
6. Its no use (wait).
7. He warned his daughter (not touch) the wire.
8. Dont forget (lock) the door before (go) to bed.
9. My mother told me (not speak) to anyone about it.
10. I cant understand her (behave) like that.
11. He tried (explain) but the teacher refused (listen).
12. At dinner she annoyed me by (smoke) between the courses.
13. You are expected (know) the safety regulations of the college.
14. He decided (disguise) himself by (dress) as a woman.
15. Im prepared (wait) here all night if necessary.
16. Would you mind (show) me how (work) the lift?
17. After (walk) for three hours we stopped to let the others catch with us.
18. I am beginning (understand) what you mean.
19. He was fined for (exceed) the speed limit.
20. I regret (inform) you that your application has been refused.
21. I couldnt help (overhear) what you said.