Complete the sentences with the comparative form of the adjectives in bold

Complete the sentences with the comparative form of the adjectives in bold
1.The blue ball is big but the red ball is.....
2.The tiger is strong but the lion is......
3.A fan is good but an air-conditioner is......
4.Mary is bad singer but her brother is even.....
 5.Simon is intelligent but Michael is.......
6.Trains are fast but planes are......
7.Tom is funny but his friend is......
8/Sue is very pretty but her sister is.....