My father told me that there used to be a forest near our town． But the farmer who owned the forest（1） 　　trees every year until one year， there were no trees left．

One day，our teacher took us out and we had a（2） 　　in the field where the forest used to be．While eating and drinking， we（3） 　　about the beautiful forest we once had．One of my classmates comes from a tribe （部落） that lived in the west of our country． He told us what he thought about the change．"It makes me really （4） 　　to learn that a forest has disappeared． My people have taught me to（5） 　　think seven generations （七代人） in the future． That's to say, when we do something to the land, we should never（6） 　　it． We must care about nature and leave it good enough for later generations．

When we heard what he said， we kept （7） 　　first． " Let's plant some trees!" said our teacher after a moment．"It will be a good （8） 　　!"So that's what we did． For the rest of the spring，we worked hard and we planted thousands of trees．

That was five years ago．Today，when I stand in that field which was once empty，I see（9） 　　about as tall as I am． It's great to see how we've（10） 　　the field． It taught us the power of thinking about the future．

（1）A． cut up	B． cut down	C． looked for	D． looked after
（2）A． picnic	B． test	C． wish	D． lesson
（3）A． planned	B． feared	C． knew	D． talked
（4）A． tired	B． excited	C． sad	D． hopeful
（5）A． sometimes	B． always	C． seldom	D． never
（6）A． protect	B． hurt	C． study	D． sell
（7）A． thankful	B． happy	C． silent	D． shy
（8）A． start	B． mistake	C． mess	D． warning
（9）A． trees	B． leaves	C． grass	D． flowers
（10）A． broken	B． bought	C． wasted	D． changed