Rewrite the sentences using expressions of ability or necessity (have to, be able to, must, can).

1. I wasn't allowed to eat in fast food restaurants when I was three.

2. I'm afraid I will always have a problem with eating meat.

3. Our teacher told me to use a black pen instead of a red one to make notes.

4. I was given the choice to buy any of the lunches available at the canteen when I was at primary school.

5. She has found ways to manage her food allergy early in her childhood.

6. It was necessary for me to avoid chocolate when I was a child as I was allergic to cocoa.