1．One of the biggest challenges the present government is now faced with is how to improve the air quality (质量)．
2．When you are fed up with all the people sometimes, it is better for you to find a quiet (安静的) place, listening to some classical music.
3．At the graduation cerem ony, our headm aster required us to raise (提高) our competitive awareness in modern society.
4．(2017·全国卷Ⅰ书面表达)I’m happy that you have made rapid (快的) progress in Chinese.
5．I want to know how the students reacted (反应) to the monitor’s suggestion put forward last week.
6．As we all know, reading (阅读) classics is popular and important because it can improve our studying career and enrich our everyday life.
7．I think the picture is telling us that there is usually a difference between one’s dream and reality (现实)．
8．(201 8·泰安检测)Only then did I realize (意识到) that it was by getting involved in the competition that I gained more selfconfidence.
9．Glad to receive (收到) your last letter, where you expressed that you were keen on Chinese family culture and wanted to know more.
1 0．We should sort out the rubbish, hoping that we might recycle (循环利用) some, which will surely benefit us a great deal.
11．They must reduce (降低) the books price so as to bring them within the reach of all students.
12．Without the forest cover, these areas would reflect (反射) more heat into the atmosphere, warming the rest of the world.
