Make sentences with must or mustn't.
1 they / have / breakfast / before 8 a.m.
They must have breakfast before 8 a.m.
2 he / not / watch / TV/ today
3 l/do / my Maths homework
4 she / clean / her teeth / every day
5 we/ not / be / late for class
6 you / not / talk / in the library
Answers & Comments
3 I must do my Maths homework
4 She must clean her teeth every day
5 We mustn’t be late for class
6 You mustn’t talk in the library