The more effort you make ,the more knowledge you've learn. The more trees we grow,the better air quality we have. The more cheaper cars they make,the more people will buy. The more darkly the weather turns,the more dangerous you go alone.
1、The harder you work ,the more you learn. 2、The more trees you plant ,the cleaner the air will be. 3、The cheaper the car is, the more people there are. 4、When you walk alone,the darker it is ,the you danger you will be.