Нужно найти ошибки и исправить их:
1) My sister is 6 years.
2) Warsaw is a capital of Poland.
3) How is she? - She is at home.
12) He is Germany.

И еще пожалуйста помогите... Что выбрать?
1) They are interested _ football and baseball
A) at B) on C) in
2) He`s pround _ his children.
A) at B) of C) in
3) I`m very good _ English.
A) in B) of C) at.

Заранее большое спасибо!