Помогите решить 2,3 номер

Ответ:

2. 1. Normally teachers don't have to wear a uniform

2. Normally a police officer have to wear a uniform.

3. I don't have to go to school on Sunday.

4. Builders have to wear hard hats.

3. 1. must

2. mustn't

3. mustn't

4. must

Объяснение: