David lives in a small city. It's a Monday morning. His boss (老板) Mr Brown says to him, "David, I want you to go to London to see my friend. Here is the address(地址). "
David goes to London by train. He goes out of the station and thinks, "The hospital is near the station. I can find it easily. "But after an hour, David is still looking for the hospital. He stops and asks an old woman. The woman says, "Go down Green Street, turn left at the end, and you will find it on your right, "David thanks her and soon he finds the hospital. It's old but beautiful.
A week later, David goes to London again, but again he can't find that hospital. So he asks someone the way. He asks an old woman too. It is the same woman! She is very surprised (惊讶的)and asks, "Are you still looking for that place?"