Comparative and superlative

Mike is ......... than Fred.

This teacher is very .......... However, last year, I had the worst teacher ever!

You have to be ......... careful when working with power tools.

This subject is ......... than the last one we studied.

Ralph is a very ......... guy. He's tough and stubborn.

Meg is the ......... person I know. She's a very positive person.

You can run pretty fast. But, I am ......... than you are.

That music is really .........! Can you turn it down, please?

I think Mount Everest is the highest mountain ......... the world.

I think rain forests are the most important regions ......... Earth. Humans would die without them because they create so much of the oxygen we breathe.