206. mustn't или don't have to? (§ 29, § 31)
1. I've got a lot of cheese, so I mustn't buy more.
2. The letter is important, so you forget to answer it.
3. It's Saturday, so we go to school.
4. It's hot today, so you put on your jacket.
5. It's sunny today, so you take your umbrella.
6. Grandpa will come home at 8 o'clock, so wait for him for dinner.
7. She'll make an omelette today, so you peel the potatoes.
8. You talk in the library.
9. We go by bus, we can take a taxi.
10. I be late for school.
11. We visit him today. He is OK. He'll go to school tomorrow.