听一段材料，回答下面几个小题。
What are the man and the woman talking about?
A．Mr．Brown’s son．
B．Mrs．Down’s son.
C．Mike’s school．
How long does Mike stay with his classmates a day?
A．About 8 hours．
B．About 6 hours．
C．At least 10 hours．
How does Mike usually go to school?
A．By bus．
B．In his father’s car．
C．On foot．