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make people ill/sick
in the future
clean up
as well as
land and water pollution
8. 采取行动做某事
9. 有机会做某事
10. 考虑我们周围的世界
act/take action to do sth.
11. 这场演出将会在学校礼堂举行。
12. 污染是世界上最大的问题之一。
have a chance to do sth.
think about the world
around us
The show will be held at the school hall.
Pollution is one of the biggest problems in the world.
改被动：
We will plant more trees in the next five years.
They won’t hold the meeting until next Friday.
Will the doctor ask the patient any questions.
More trees will be planted by us in the next five years.
The meeting won’t be held by them until
next Friday.
Will the patient be asked any questions by the doctor?
改被动：
4. People should write business letters in English.
5. Are you going to finish your homework this afternoon?
6. What are the children going to do?
Is your homework going to be finished by
you this afternoon?