Complete the exchanges using phrases and sentences from the list

1. - Why don't we go to the cinema tonight?
- ... I can't.
2. - Are you free tonight?
- ... .
3. - There's a new comedy on at the Odeon. Care to join me?
- ... idea.
4. - How about going out for dinner?
- ... .
5. - Let's go to the rock concert on Sunday.
- Rock music ... .