— The number of pandas is getting________ because their living areas are becoming polluted. — So we must do something to protect them.

Shanghai is bigger than ____city in Japan.

Things will get better in the future, we will have ______ cars and _____pollution.

 ––Beijing is a big city, isn’t it?––Yes. In fact, it’s one of ____ cities in the world.

We should do ________ talking and some more work. Actions speak louder than words.