помогите пожайлуста 1 задание

1-What was my brother doing yesterday?
2-What was my brother learning yesterday?
3-Which song was my brother learning yesterday?
4-What is the name of the song that my brother was learning yesterday?
5-In what language is the song that my brother was learning yesterday?
6-Who was learning a new English song yesterday?
7-When was my brother learning a new English song?