Вопрос по английскому языку:

Задание:Complete the campsite notices.Choose the most suiable modal verb.
can,can,can't
could,don't have to, didn't have to,
must,mustn't,should.
1)If you ... ride a bike,why not join one of our cycling trips?
(No excuses - if you ... ride a bike when you were five,you still ... now!)
2)If you enjoy delicious food,you ... visit our cafe.We stongly recommend it!
3)You ... play music after 11 p.m. It's against camp rules.
4)You ... pay for maps.They're free!
5)Please don't use the pool if you ... swim.
6)You ... keep the campsite clean and tidy,or we will ask you to pay a $20 fine.Last year our campers were all very responsible and we ... fine anyone.Thank you for your cooperation!