根据所给汉语完成下列句子。
直到15岁的时候他才明白学习英语的重要性。
那个工厂覆盖了10,000平方米的面积。
对于熊猫而言，在野外生存很困难.
我们应该采取措施来保护我们的母亲河
昨天大雨导致了很多车祸。
I plan to go abroad to celebrate my twentieth birthday in （八月）．
This kind of silk feels much （柔软的） than that one．
The two little girls often stay together to （分享） their secrets．
Since its reform and opening up began in the late 1970s，China has made great achievements in many fields．
（1）Beijing's new airport saw four passenger planes complete test flights Monday morning．At 9 am，on May 13，2019，the A380 from China Southern Airlines made the first flight（飞行），taking off from Beijing Capital International Airport in the northern part of the city．At 9：30 am，the plane landed smoothly on the western runway at Beijing Daxing International Airport．
China's first science fiction（科幻）film The Wandering Earth interests moviegoers around the world．（2）中国的科幻电影行业前途光明．Science fiction is really taking the central stage in China．Let's just see more of it．
A study from NASA said that the Earth is a greener place than it was 20 years ago．（3）China is leading the world's greening effort．The result comes mostly from tree﹣planting programs and intensive agriculture in China．
Another research scientist and co﹣author of the study Rama Nemani said， "（4）Once people realize there is a problem，they begin to fix it．In the 1970s and 80s in China，the greening situation was not good．In the 1990s，people realized it．And today things have improved．"
So many achievements make us feel proud of our motherland．（5）"我最亲爱的祖国，你像大海永不干涸．"We want to sing sincerely for her．
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Do you enjoy hitting the books？ It doesn't mean you enjoy beating your books with your hand． That may be reasonable if you don't understand something inside your books． Hitting the books just means that you are studying hard． You can learn a lot when you hit the books． （1）Especially before exams，most students spend a lot of time hitting the books to get good grades．
This is just one example of expressions that can't be understood by taking them apart（分开）word by word． Expressions like this are called idioms（习语）． They are an important part of a culture's language． Languages and cultures are closely connected． One example of an idiom in the Chinese language is "dui niu tan qin"， or "to play the lute（拨弦乐器）to a cow．" （2）这意味着某人在说话或写作时不考虑其听众或读者．
Let's get back to idioms that begin with the word "hit"． （3）There are many of them in English，but it's not that easy for you to understand．
One common idiom you may hear in English is "hit the road"． It means to leave or to go． You can say， "Hey， I need to hit the road． Can we talk about this another time？" Or simply， "It's time to hit the road．" When you are tired and you want to go to bed， you can say， "I need to hit the hay（干草）．" It means you want to go to sleep．（4）That's because a bed was often a big bag with hay inside in the past．
（5）习语使你的语言生动而有趣． Let's hit the road to learn some and try to use them．
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