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ws the importance of time. When→whichtime has gone, it will never return back.→turn或去掉backIt is a pity when many people make poor use of time. They→thatspend precious time sleeping, drinking and traveling.They don’t realize wasting time is equal to waste part of their life.→wastingThey always regret having made a little achievement so far.Therefore, we should form the habit of value time. Do not→valuingput off what can be done today until tomorrow. Laziness9.√will not only bring us failure, but also lead us on the road →toof poverty and even death.3(2009桂林高三模擬)Dear John,How nice to hear from you! In your letter you asked me how to keep health. I would like to give you some advice.→healthyAs you know,our teenagers grow very fast,so we need→weplenty nutritious food, such as fish, meat, and beans,specially fresh vegetables and fruits. You’d better not→especiallyto eat too much sweet. Also, you should take exercisesregularly instead of studying in the cl