Помогите исправить предложения: 1. It's Sunday — we mustn't go to school. 2. He did must...

Question

Помогите исправить предложения:
1. It's Sunday — we mustn't go to school.
2. He did must pay a fine.
3. He's carrying a bag full of letters — he can be the postman.
4. Who's that at the door? It mustn't be Paula because she's at work.
5. He doesn't like confined spaces — he must to have claustrophobia.
6. He might arrives late.

Answer 1

1.It's Sunday we don't have to go to school.
2.He had to pay a fine.
3... - he must be a postman.
4. It can't be Paula because she is at work.
5. He must have claustrophobia (без to)
6. He might arrive late. (без arriveS)