Let's talk部分答案
There was only one small building on a hill.There was no library in his school.There were no computers or Internet in his school.
(仅供参考)
There was a small building in my school five years ago.There wasn't a library. There were no computers.There is a big building in my
school now.And there is a new library. There are many computers.
图片略
Find the mistakes部分答案
(仅供参考)
At that time,there were no post offices,cafes,gyms,motels or cinemas. People didn't go by bike or bus. People couldn't use traffic
lights.

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