Use the gerund of the verb in brackets: a) in the active or passive voice (non-perfect from).
1. Why do you avoid (to see) me?
2. He tried to avoid (to see).
3. We insist on (to send) him there at once.
4. He insists on (to send) there instead of me.
5. Do you mind (to examine) the first?
6. He showed no sign of (to know) them.
7. She showed no sign of (to impress).
8. He had the most irritating habit of (to joke) at the wrong moment.
9. I was annoyed at (to interrupt) every other moment.
10. He hated (to remind) people of their duties or ( to remind) of his.
11. On (to introduce) they easily fell to (to talk).
12. In (to discuss) the problem they touched upon some very interesting items.
13. The equipment must go through a number of tests before (to install).
14. The operator can set the machine in motion by (to push) the button or (to press) the pedal.
15. The water requires (to filter).
16. The matter in not worth (to speak of).