5 Rewrite the sentences using can, can't, could, might, should or ought not to, as in the example. 1 You aren't allowed to eat in the sports centre. You can't eat in the sports centre. 2 Is it OK if we play football here? 3 It's a good idea for us to warm up before the match. 4 It's possible that Brian has a ball that we can play with. 5 You had better not eat so many sweets. 6 Am I allowed to use your phone?​