1. 用所给词的适当形式填空.

1. （1） The coming bus is  (crowd). Please let the oldget on first.

3. （2） It's not so  ( easy ) as I thought.

5. （3）  (play) football is much more interesting than running.

7. （4） They have just cleaned the windows, so the room looks much  (bright).

9. （5） The more you eat, the   (heavy) you'll be.

11. （6） The Yellow River is the second （long）river in China.