Даю 40 баллов помогите с английским для 3-4 класса

Worse
more nervouse
more serious
easier
more intelligent 
more expensive 
hotter
better
more exiting 
bigger

1. The maths results were worse than the science results.
2. My friend was more nervous about the exams than me.
3. I think British TV is more serious than American TV.
4. I think English is easier than Germany.
5. You are more intelligent than me.
6. Books are more expensive than CDs.
7. This summer is hotter than last summer.
8. You are better at art than I am.
9. Skiing is more exciting than swimming.
10. My bedroom is bigger than my brothers bedroom.