Question

What will the city of the future look like? No one knows for sure, and making1.______(predict) is a risky business. But one thing is certain-they are going to get bigger before they get smaller. In the future, care for the environment will become very important 2._______earth’s natural resources run out. We will use lots of3._______(recycle) materials, such as plastic, steel, glass, wood and paper, and we will waste fewer natural4._______.We will also have to rely more5. _______ alternative energy, such as solar and wind power. All this seems certain, but there are plenty of things about city life in the future 6. _______ are not certain.

 

Answer 1

【答案】

1.Predictions

2.as

3.recycled

4.resources

5.on

6.which/that

【解析】略