`color{red}{#Atr}`

`11.` Her father, who is in his seventies, still manages to work fulltime.

`-` her father `->` người `->` dùng ĐTQH "who"

`12.` The scientist whose vaccine was mass produced has won prizes for her work.

`-` whose + N

`@` Mệnh đề quan hệ:

`-` Who: thay thế cho người

`-` Whose: thay thế cho người, vật hoặc loài vật

N (người) + who + V 

N + whose + N (sở hữu)

------------------------------------------

11. Her father, who is in his seventies, still manages to work fulltime.

12. The scientist whose vaccine was mass produced has won prizes for her work.

`color{orange}{~MiaMB~}`