Task 1. Correct the mistakes:
1. He not must be late.
2. He musts take his dog for a walk.
3. Parents did must obey their children.
4. You don’t must smoke here.
5. You are going must to bed now.
6. People must to take care of nature.

Объяснение:

1. He  must not be late.

2. He must take his dog for a walk.

3. Parents must not obey their children./ Children must obey their parents.

4. You must not smoke here.

5. You must go to bed now.

6. People must take care of nature.

1. He must not be late.

2. He must take his dog for a walk.

3. Children must obey their parents.

4. You mustn't smoke here.

5. You must go to bed now.

6. People must take care of nature.