假设你是李华,给你的笔友Tom写封信告诉他你是怎样使身体保持健康.60-80词左右.开头已给出.（用上所给词,可适当发挥）
参考词汇：do sports,favorite,keep fit,habits,fruit and vegetables,be good for
开头如下：
Dear Tom,
Thank you for your letter.Now let me tell you how to keep healthy in my daily life.