A.

Carol:

Where DOES Elizabeth WORK?

David:

She WORKS in a hospital. 

Carol:

Really? What DOES she DO there?

David:

She IS a doctor.

B.

Raul:

Where DO you WORK?

Mabel:

I WORK in a department store. 

Raul:

Oh? And what DO you DO there?

Mabel:

I AM a salesperson. I SELL computers.

C.

Elsa:

What DOES Tom DO?

Ariel:

He WORKS in an electronics store. 

Elsa:

What DOES he DO there, exactly?

Ariel:

He REPAIRS TVs.