V-ing hoặc to-v 16. I forget...................................( meet) you. 17. Dont forget.....................................( give) her my regards. 18. He promised.......................................( not go) to school late. 19. They practise.....................................( speaking) English every day. 20. They find it is very difficult...............................( understand) her. 21. My daughter likes..................................( drink) milk. 22. The teacher asked us....................................( write) the exercises. 23. My father gave up..............................( smoke) 12 years ago. 24. She refused................................( answer) my questions. 25. He suggests.................................( go) on a trip. 26. They agree....................................( camp) in that field. 27. They didnt want me...............................( buy) that old house. 28. He regrets.................................( spend ) too much on computer. 29. I regret................................( say ) that you got bad points. 30. The doctor advised me.................................( do) exercise every morning.