Minh hỏi lại ạ :(((( She has three brothers. Two of them were teachers.

Combine the following sentences using a proper relative pronoun : 

She has three brothers .Two of them were teachers .

-> She has three brothers , two of whom were teachers .

-> All/most/.... + of + whom/which +.... 

-> Cô có ba anh em trai, hai trong số đó là giáo viên. 

-> Vì ở trong câu này ta có chữ two nên ta dùng " whom " .

@Chaeyoung