Complete the sentences with mustn039;t or the correct form it039;s not

Complete the sentences with mustn't or the correct form it's not have to.
1. You mustn't smoke at petrol stations
2. She ____ come is she doesn't want to
3. We ____ miss the train. It's the least 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. Wet 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.