1．The government calls on the public to go to work by bicycle instead of by car to reduce (减少) air pollution.
2．His recent discoveries (发现) have added to his reputation in the field of science.
3．We should equip (配备) our students with wide knowledge so that they can do more for the country when they grow up.
4．The teachers often make comments (评论) on my performance.
5．I always confuse (使混淆) you and your sister — you look so alike.
6．Due to the rapid development of economy, the population of our city is expanding (扩大) rapidly.
7．With all his attention focused (关注) on his career, he has no time to attend his old parents.
8．It is known that a chemical (化学的) change will take place when a candle is burned.
9．The past decade (十年) has seen a huge rise in the number of computer owners.
