Comparative and superlative

I think Chelsea is ......... now than she was three years ago.

Sam is ......... than Stacey is about the situation.

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

Nate is the ......... kid in our class.

Your brother is ......... than you. So, please listen to him when we're not here.

You have been the ......... disappointment this year. Your work performance has been very poor.

My homework assignment is very .......... It's too difficult.

This is the ......... road I've ever seen!

Kevin is bad, but Norah is ......

Melanie is the ..... girl in our class.