Exercise 1: choose the best answer
1. A. arrive
=> had better do sth
2. B. to sit
3. C. smoking
=> give up + V-ing
4. C. going (suggest + V-ing)
5. B. to go (decide to do sth)
6. A. to keep (try to do sth: cố gắng làm gì)
7. C. being (enjoy + doing sth)
8. C. waiting (mind + V-ing)
9. A. working (stand + V-ing: chịu đựng)
10. B. to make (want + to do sth)
11. C. making (avoid + V-ing: tránh)
12. B. playing (remember + V-ing: nhớ đã từng làm gì)
13. C. hearing (look forward to + V-ing: trông chờ điều gì)
14. A. encourage (should + V-bare)
15. B. to pass (hope to do sth)
16. C. raising (preposition + Ving)
17. A. to widen
18. A. To pass
19. D. b and c are correct (need + V-ing = need to be done)
20. C. to start (agree to do sth)
