yesterday when i was walking along the street, i saw an old lady in front of me. she wanted to cross the street. all of a sudden, a bicycle ran against her at a high speed. the old woman fell to the ground. the cyclist was very frightened and ran away. i hurried to help the lady up, called a taxi and sent her to the nearest hospital. luckily she was not badly hurt.

　　we live in a large city which is like a big family. we should care for each other.