1. The old/ older the children are, the tall/ taller they become.

2. The active/ more active you are, the flexible/ more flexible you get.

3. The dark/ darker it got, the nervous/ more nervous James was.

4. The higher/ high the buildings are, the uglier/ ugly they become.

5. The narrow/ narrower the streets are, heavier/ the heavier the traffic jam gets. 6. Louder/ The louder the music was, angrier/ the angrier Peter became.