为你解答.
1、I left the library after I finished reading themagazine.(改写句子,句意不变)
I (didn't) leave the library (until) I finished reading the magazine.
2. We spent halfa day getting to the top of themountain(改写句子,句意不变)
It (took) us half a day to (get) the top of the mountain.
3. 步行上班或上学对身体好.
It isgood for health to go to work or school (on foot).
4. 学生们被告知因为雾霾天要呆在室内.
The students are told to stay indoors (because of) the hazy weather.
5. 人们针对为什么我们没能制作出像这么流行的电视剧产生争论.
People debate why we haven't made TV plays (so) popular (as) “My Love from the Star".
6. OK是世界上使用最多的词,但是很多人不知道它的来源.
The term OK (is) the most frequently (used) in the world, but most people don't know where it (comes from). .