Read and circle the best modal verb. Don't forget our school trip on Friday. You must / mustn't be late for school. The bus leaves at 9 o'clock and it won't wait for anyone. You can wear your own clothes - you 2 mustn't / don't have to wear school uniform. But you 3 should / shouldn't look smart. It may / must be cold on the boat so you 5 should / might bring a warm coat. It 6 might / can rain so bring an umbrella, too. And you 7 might not / mustn't forget your packed lunch - there isn't a cafeteria at the castle. While we are there, you 8 can / can't explore all the rooms with your friends, but don't get lost!