Ответ:

1. A good teacher has to be skilled and patient.

A good teacher mustn't be too strict and impolite.

2. A good librarian has to be friendly and kind.

A good librarian mustn't be harsh.

3. A good headmaster has to be cooperative and fair-minded.

A good headmaster mustn't be arrogant.

4. A good janitor has to be hard-working.

A good janitor mustn't be careless.

5. A good psychologist has to be passionate about his job.

A good psychologist mustn't be unsympathetic.

Объяснение: