Помогите, пожалуйста с Английским.

1 He is the -most strong- boy in our class.
верно:
He is the strongest boy in our class.
2 That cake is the -baddest-.
верно:
That cake is the worst.
3 My book was -interestinger- than this book.
верно:
My book was more interesting than this book.
4 He was the -handsomest- man in my family.
правильно:
He was the most handsome man in my family.
5 His flat was -biggest- than his friend's flat.
верно:
His flat was bigger than his friend's flat.

1)he is the strongest boy in our class
2)that cake is the worse
3)my book was more interesting than his book
4)
5)his flat was bigger than his friend's flat