Помогите решить:Choose the correct preposition and fill in the gaps which

Помогите решить:Choose the correct preposition and fill in the gaps which the-ing form.
1. Thank you for/to ...(help) me which my biology report.
2. Are you interested in/for ...(take) part in the conference?
3. How about/for ...(talk) move calmly?
4. Did he apologize about/for ...(be) so rude?
5. This film is worth -/at ...(avoid) conflict.