Fill in correct comparison forms of the adjectives.
1.A helmet for American football is (strong) in the wold.
2.A baseball bat is (short) than a hockey stick.
3.Nick is (happy) boy that I know.
4.A baseball glove is (hard) than my winter mittens.
5.Sumo fighters are (fat) among athletes.
6.London is (big) city in England.
7.I think my shorts and sneakers are (good) than his.
8.A volleyball net is (large) than a tennis one.
9.He has (expensive) cap in our family.
10.Adam is (bad) player in their team.
11.Lionel Messi is one of (popular) football players in the world.