题目内容：

听下面一段较长对话，回答以下小题。

1.What does the man probably do?

A. A manager. B. A salesman. C. A cleaner.

2.What isn’t needed for his job?

A. Copying machine. B. Wax. C. Floor-polishing machine.

3.What’s the possible relationship between the speakers?

A. Employer and employee. B. Mother and son. C. Teacher and student.