1. to buy ( want+ to V)

2.  be washed

3. staying ( S+ be+ used to+ V-ing)

4.  to finish

5. to finish ( S+ be+ too+ adj+ to V)

6. to go

7. to play ( let+ ...+to V)

8.to telling/tell ( S+ be+ used to+ V-ing)

9. to be  ( to be there on time: đến đúng giờ)

10.to get ( how to sth : làm sao để...)

11. visit ( used to+V0)

12. cooking ( S+ be+ V-ing)

13. to help

14. to see( enough+to)

15. to see( enough +to)

1) To buy
2) wash
3) stay
4) to finish
5) to finish
6) to go
7) be
8) to get
9) visit ( Vinf)
10) cooking, sau V thêm -ing
11) to help
12) to see ( sau enough thêm to trước V)
13) to see ( sau enough thêm to trước V)