Ответ:
1 A: Let's put up some balloons.
B: a Sure, why not?
2 A: Do you feel like watching the parade?
B:
b Great idea!
3 Shall we go on the carnival rides?
b I'd rather not.
4 A: Let's wear costumes to the party.
B: b That sounds good
5 A: Do you feel like listening to music?
B: a Sure!
6 A: Let's watch the fireworks.
B: a I'd rather not. Let's stay at home instead.