UNIT 1. IN AND OUT OF SCHOOL » 6

Fill in “must” or “mustn't”. 1. It's cold. You mustn't leave without your jacket. 2. You must eat fruit and vegetables to stay healthy. 3. I must go to the post office. I have a letter to send. 4. You mustn’t speak rudely to your parents. 5. You mustn’t park here – it’s illegal. 6. We must hurry or we’ll miss the bus.