There was a grass in the nature park five years ago.
People couldn't use the Internet.
Now there is a gym in our city.
There was no computer room in our school twenty years ago.
At that time, people didn't go there by bus.
A.现在我们城市有一座体育馆。
B.人们没法使用互联网。
C.五年前,这个自然公园有一个草坪。
D.那时,人们没有乘公交车去那儿。
E.20年前,我们学校没有电脑室。