1. 用方框中所给单词的适当形式填空。

Predict   pollute   part   building   plant

1. （1） They a bridge over the river last year.
3. （2） What are your about the future?
5. （3） Every year, about 6.5 million people die because of air .
7. （4） They visited different of the country last year.
9. （5） They some trees in the park last year.