听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题给出5秒钟的作答时间。每段对话或独白读两遍。
Where does the conversation probably take place

[A] The student can’t leave unless he has put everything back in the cupboard.
B. The student can leave after he turns off the electricity.
C. The student can leave after he has tidied the lab.

A． In a restaurant.
B． On a farm.
C． At the man’s home.