1. brother        

2. factory         

3. teacher        

4. school

Transcript:

1. A: What does your brother do?

B: He is a farmer.

2. A: Where does your father work?

B: He works at a factory.

3. A: What does your cousin do?

B: She is a teacher.

4. A: Where does your sister work?

B: She works at a school.