听一段材料，回答下面几个小题。
What time will they go to see the Smiths?
A. 3:30.
B. 4:00.
C. 4:15.
How will they go there?
A. By bus.
B. By bike.
C. On foot.
Where will they meet?
A. At the bus stop.
B. Opposite the factory.
C. In front of the bookstore.