A, greet B and ask what he is doing.

Hi, Dave. What’re you doing? Seems you’re doing editing work.

B, respond to A.

Well, I just downloaded an essay from the Net, and have got to make some changes for my

literature class.

A, make comments on B’s practice.

What? Downloaded an essay? Are you crazy? We’re supposed to write papers by ourselves.

B, try to justify your act.

Sounds easy! But I don’t have the time. Besides, I’m not into literature, you know.