Comparison of adjectives in sentences

This is a nice cat. It's much _________ than my friend's cat.

Here is Emily. She's six years old. Her brother is nine, so he is ____________ .

This is a difficult exercise. But the exercise with an asterisk (*) is the ___________ exercise on the worksheet.

He has an interesting hobby, but my sister has the __________ one in the world.

In the last holidays I read a good book, but father gave me an even ____________ one last weekend.

School is boring, but homework is ____________ than school.

Skateboarding is a dangerous hobby. Bungee jumping is ____________ than skateboarding.

This magazine is cheap, but that one is ___________ .

We live in a small house, but my grandparents' house is even ___________ than ours.

Yesterday John told me a funny joke. This joke was the ___________ joke I've ever heard.