英语作文:假如你是李华,你的笔友catherine给你写信,询问如何保持健康...答:回信是吧?Dear Catherine,If you want to be a healthy child,you can do sports every day.Then,don't eat junk food,like hamburgers,French fries and many rich food.You should eat many vegetables and fruit. Before breskfast,lunch and dinner,you must wash your hands,because they ...