We know that food is rather important for man.Yet,wasting food is still seen here and there.I often see many students in our canteen throw food away.Some restaurants always have a lot of rood left on their tables.These phenomena are disappointing.Nowadays,there are many people facing food shortages or suffering from starvation and death in the world,especially in Africa.So it's time for us to take steps to save food.By saving food,we can help the people in need.I strongly call on everyo...