Answer:
1.Her new house is biggest than her new one
2.Peter is the tallest in my class
4.According to me, Math is harder than English
5.Mary is most intelligent in my group
6.The Nile is longest river in the world
8.She is the most prettiest I have ever met in the first time
sorry Yan lang nasagot ko Hindi ko na kasi Alam yung mga iba and please correct me if I have wrong
HOPE IT'S HELP