假定你是李华，你的英国笔友David来信，向你诉说体重问题带来的烦恼。请你给他写一封回信，提出自己的建议。要点如下：
1.注重身体锻炼：
2.注意健康饮食；
3.保障心理健康。
注意：
1.词数80左右：
2.可以适当增加细节，以使行文连贯：
3.开头语已为你写好。

Dear David，
_________
Yours，
Li Hua

【考点】书信类．

【答案】Dear David，
I am sorry to hear that you are worried about your weight problem.Here are some of my ideas about it，which I hope will be of some help.
It is important to make exercise a regular part of every day，which will help you lose weight and offer some other benefits.As important as exercising is a balanced diet，because the right balance between fruits and vegetables，proteins and fats keeps you healthy and strong.Above all，a good mental health is necessary，leading you to have an active life all along.
I hope everything will be fine with you.
Yours，
Li Hua