16. C looking up
17. B making
18. A going
19. D closing/ sitting
Exercise 6.
1. A. To arrange
2. A. To deal/ doing
3. A. To speak
4. B. To go
5. C. Having/ to drive
6. D. Switching off/ go/ check
7. B. Go/ swimming/ going/ bathing
8. A. To buy/ to ask
9. B. Dining/ have/ to go/ having
10. C. Traveling/ standing/ to go
11. B. To come/ seeing/ listening
12. C. To hear/ seeing
13. B. Swimming/ to bring
14. A. Lending/ to write
15. D. To start off/ wait/ snowing
16. A. Meeting/ meeting
17. B. To stay/ to rewrite/ rewriting
18. A. To buy/ having
19. D. To avoid/ speaking