Choose the correct option to complete each sentence. 1 You don't have to / can't use your phone here. It's against the rules. 2 According to the rules, you shouldn't / have to say how old you are when you sign up for a social media account. 3 Should / Can't I wear a tie on Friday evening? Is it formal? 4 You must / mustn't return the library book by Friday. 5 We mustn't/ should wear shoes here. We have to take them off. 6 Have to / Can I wear these boots to school? 7 You can / shouldn't wear that old T-shirt to school - it's too dirty. 8 We don't have to / have to dress up for the party - it's casual.
