【正文】
He was no longer a litter boy. 他不再是一個小孩子了。 Rubbish everywhere Air pollution Water pollution Noise pollution Exercises ? True or false ? People in large cities feel that the sky is as blue as it used to be . ( ) ? There is more fresh air for people to breathe. ( ) F F 1. People in large cities feel that the sky is no longer as blue as it used to be . 大城市的人們都覺得天不再像以前那么藍了。 ③ used to do 過去常常