5. D use
-> let sb Vnt
6. B to
-> be looking forward to Ving
7. B to study
-> advise sb to Vnt
8. B not to behave
-> tell sb not to Vnt
9. Not to play
-> tell sb not to Vnt
10. Her not to go
-> advise sb to Vnt
11. A
-> ask sb to Vnt
12. B for
-> apologize to sb for Ving
13. A thanked
-> thank sb for Ving
14. B us to write
-> encourage sb to Vnt
15. To stay in bed for a few days
-> tell sb to Vnt