3. it is used by travelers and business people all over the world.

　　4. china has joined the wto and the olympic games will be held in china. english becomes more and more useful.

　　5. so english is very important and i like english very much.

　　6. we have a lot of fun in the english class.

　　7. our english teacher often makes us happy in the english class.

　　8. i hope i can go abroad one day, and then i can speak to foreigners in english.

　　9. i like english and try my best to learn it.

　　二、环保

　　1. it's our duty to protect our environment.

　　2. it is very important to take care of our environment.

　　3. we should not throw litter onto the ground.

　　4. we should not spit in a public place/cut down the trees.

　　5. we should plant more flowers and trees.

　　6. we must pick up some rubbish and throw it into a dustbin.

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