1. Put the verbs in brackets into the correct form (gerund , infinitive, participle).

1. I caught him (climb)    over my wall. I asked him ( explain)    but he refused (say)    anything, so in the end I had (let)    him (go)   .

2 .When at last I succeeded in (convince)    him that I wanted (get) home quickly he put his foot on the accelerator and I felt the car (leap) forward.

3 .I'm not used to (drive) on the left. When you see everyone else (do) it you'll find it quite easy (do) yourself.

4. It is pleasant (sit)   by the fire at night and (hear)   the wind (howl) _outside.

5.There was no way of (get) out of the building except by (climb)_down a rope and Ann was too terrified (do) this.

6. We heard the engines (roar)   as the plane began (move) and we saw the people on the ground (wave) _good-bye.

7. It's no good (write) to him; he never answers letters. The only thing (do) is (go)_ and (see) him.

8. Why did you go all round the field instead of (walk) across it? I didn't like (cross) _it because of the bull. I never see a bull without (think) that it wants (chase)  me.

9. The people in the flat below seem (be) having a party. You can hear the champagne corks (thud)_ against their ceiling.

10. I don't like (get) bills but when I do get them I like (pay) them promptly.

11. Ask him (come) _in. Don't keep him (stand) at the door.

12. The boys next door used (like)  (make) and (fly) model aero planes, but they seem to have stopped (do) that now.

13. I knew I wasn't the first (arrive), for I saw smoke (rise) _from the chimney.

14. We watched the men (saw)_the tree and as we were walking away heard it (fall) with a tremendous crash.

15. I hate (see) _a child (cry) .

16. We watched the children (jump) _from a window and (fall) _into a blanket held by the people below.

17. It is very unpleasant (wake) _ up and (hear) the rain (beat)  on the windows.

18. He saw the lorry (begin) (roll) forwards but he was too far away (do) anything (stop)

19. There are people who can't help (laugh) _  when they see someone (slip) _on a banana skin.

20. I prefer (drive) to (be driven) {{being driven}}}.