聽第3段材料，回答第16-20小題．
16．Who goes to work in the morning？
A．My mother．
B．My brothers．
C．My father．
17．What does your mother do in the afternoon？
A．She visits her friends．
B．She reads books．
C．She watches TV．
18．How do we go home from school？
A．By bus．
B．By car．
C．On foot．
19．When can we watch TV？
A．On Sunday afternoon．
B．Every day．
C．At the weekend．
20．How many people are there in my family？
A．Three．
B．Four．
C．Five．