Ответ:

1. Carl doesn't earn as much as Julia.

2. This is the office where Sally works.

3. Karen is the most organised person in the office.

4. That's the job advert which I saw yesterday.

5. Jenny's job is more tiring than Mike's.

6. Lisa, who is a nurse, is my cousin.

7. Sarah's project is the best of all.

8. This is Tom, whose father is a doctor.