题目内容：

One day, Li Nan sees an old woman sitting in front of the railway station. She looks worried, Li Nan goes up to her and asks, “What’s wrong with you? May I help you?”

“I’m from a small town, and I’m on my way to Beijing to see my son. I can’t find my ticket.” “Isn’t it in one of your pockets?” asked Li Nan.

“No, I’m sure it’s lost. And I have no money to buy another one. What shall I do?” Then she begins to cry. Li Nan takes the old woman to the ticket office. He buys a ticket and gives it to the old woman.

The old woman does not know what to say. She says “Thank you” to Li Nan again and again. When the train is starting, she suddenly remembers that she doesn’t know Li Nan’s name. She feels very sorry.

根据短文内容回答问题。

1.Why is the old woman worried?

2.Where is the old woman going?

3.What does Li Nan do for the old woman?

4.Why does the old woman feel sorry in the end?

5.What do you think of Li Nan?