12. She warned him not to repair the computer himself.
13. She told me not to let him in.
14. He begged her not to go out without her.
15. She told me not to my bag

12. "Don't repair the computer yourself," she warned him.
→ She warned him not to repair the computer himself.
13. "Don't let him in," she said.
→ She told me.. not to let him in.
14. "Don't go out without me," he begged her.
→ He begged her ...not to go out without her.
15. "Don't forget your bag," she told me.
- She told me not to forget my bag.