Complete the sentences with the correct form of don’t have to or mustn’t.

1. A security guard mustn’t leave the shop. 2. In my country, taxi drivers don’t have to carry more than four passengers. 3. In my new job, I don’t have to learn the local language—everybody speaks English! 4. They said hotel guests don’t have to leave until 10 am, so we can take our time in the morning. 5. Your grammar mustn’t be perfect—the important thing is to be able to communicate.