Tìm lỗi sai và sửa

1. although Peter aand Tom are in the same class, they don't really have much in ___
A. Common
B. Chance
C. Nature
D. Ages
a) Tìm lỗi sai và sửa
2.In America, many people over the age of 30 doesn't like to talk about their age
A. in america
B. the age of
C. doesn't like
D. about
3.I think that there must be a mutually trust between friends.
A. that
B. must be
C. mutually
D. friends