What do people have to /do not have to do in their jobs? What must/ must not they do?

О, похоже, у тебя задание на английский язык, где тебе нужно заполнить пропуски в предложениях. Давай вместе решим:

1. Car designers must design modern cars but they do not have to test them. I think, car designers must be clever and they must like driving cars.
2. A nanny must work with children. She must get on well with them. Besides, she must be trustworthy and kind.
3. A lawyer must know all the laws. But he/she must also keep the law and order in his/her job. Lawyers must be trustworthy professionals.
4. A librarian must meet a lot of people during the day. A good librarian must be ready to advise people what book to choose. But a librarian must not read all the books in the library she/he works in.
5. A businessman must make his business plan and organise other people to realize this plan. A business person must be trustworthy.

Надеюсь, это поможет тебе с заданием! Если будут еще вопросы - не стесняйся спрашивать.