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!