At eight on Sunday morning, Peter and David are at the bus stop. They go to watch a car show by bus. An old woman comes to them.
Woman: Excuse me, where's Hualian Supermarket?
Peter: You can take a No. 5 bus on Nanjing Road and get off on Zhongshan Road. And then you walk along Zhongshan Road and turn right at the first crossing. The supermarket is on the left.
Woman: I can't find the supermarket there. My daughter works in the supermarket. I want to go there to see her. Can you take me there?
Peter&David: All right.
They take the old woman to the supermarket. Then they go to the car show in a hurry. They are late for the car show, but they are very happy.
1.What do Peter and David do on Sunday morning?