听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给出的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，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 Where is Mr. Lee’s office

[A] Because Tom is on his way home.
B. Because Tom is having supper outside.
C. Because Tom has had his supper already.

A．Parents are unhappy with their growing children.
B．Parents have suitable ways to talk with their teenagers.
C．Parents should be patients with their silent teenagers.
D．Parents should try to understand their teenagers.