Today I'd like to tell you sth about my best friend---Mary. She is a beatiful, clever girl. She is ready to help others,whenever others are in trouble. She is brave, outgoing and popular. Last Sunday, she and I went shopping.we are walking on the street, when we saw a little boy crying . we stopped to see what had happened.The boy told me he was lost and couldn't find her mother.we asked him a lot about his family. He couldn't explain clearly. At last we had to send him to the police station. we felt happy. In Mary's spare time, she often helps us learn English. we speak Enlish as often as possible . I find I have improved my English a lot . we are best friends. we can talk everything in the sun . i think a good friend is that we should share happiness and sorrow . Luckily, Mary is such a good friend. 翻译