A.A policeman.B.A shop assistant.C.A librarian.D.A waitress.

【答案】C

【解析】

【原文】

10. M: Can I take these books out, please?

W: Yes, sure. You've filled in the forms, haven't you?

M: Yes, here you are.

W: That's OK. You can keep them till the eighteenth of May.

Q: Who is the man talking to?