14. Complete the sentences with mustn't or the correct form of not have to.
1. You mustn`t smoke at petrol stations.
2. She ________ come if she doesn't want to.
3. We_______ miss the train. It's the last one tonight.
4. I ______ do this work tonight. I can do it tomorrow.
5. I________ clean the floor today. I cleaned it yesterday.
6. We________ forget to lock all the doors before we go away.
7. They_______ sit in the sun for too long. They might get burnt.
8. We________ stay in a hotel in London. We can stay with my cousin.
9. He________ come home too late. He's got an important day tomorrow.
10.We_______ spend too much money tonight. We've only got a little left.
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