Помогите с 3 и 4 пожалуйста

3)

1. younger

2. youngest

3. more intelligent

4. most intelligent

5. best

4)

1. I have to wear a uniform.

2. You needn’t do washing up.

3. They have to keep their house clean.

4. We don’t have to wake up early.

5. She has to make her bed.