Word formation: Job-related

Change this into a job: fire

A ... collects and delivers letters and parcels.

• postman

• letterman

• post office

• mailman

Chang this into a job: Journal

A ... collects information and does studies.

• research

• researcher

• reseachman

• researchor

Change this into a job: engine

A ... has a job in politics.

• politicer

• politicor

• politician

• politition

What are the jobs for this word: business?

• businesswoman

• businessman

• businessian

• Businessist

Change this into a job: piano

A ... is someone who treats ill people.