There is _____pollution and ____fishes in the river now than 20 years ago.

Now Chinese people are living a _________life than before.

 Which is the _________clothes store in town?

There are many supermarkets in this town, but we think this is _______ of all.

 –You should be _______ careful when you take the chemistry exam.--I agree. In this way, I will make _______ mistakes.