用冠词填空 每空2分 At school , we teenagers are always encouraged to help each others. But that needs more courage for me.On a snowy evening, I went home by bus as usual. The bus stopped and ___6__old man got on the bus slowly. She was so weak that she almost fell when __7__bus began moving. At that time I thought there must be someone who would offer her a seat. But to my surprise, no one did. She walked hard to __8_ back door of the bus. I wanted to offer my seat to her, but I was too shy to do that. Suddenly,____9_ young girl stood up and offered her seat to the old man. The old man was moved and thanked to her again and again. The girl just smiled and said nothing. What ___10__nice girl. In fact, I regretted that I didn't offer my seat to the old man. I wasn't brave enough. Helping others needs courage.