Have you ever met the man ___ Mary's cousin
A. Who married
B. Who is married
C. Whom married
D. Who was married
Giải thích: Câu đầy đủ: The man married Mary's cousin. Have you ever met that man?
=> Sử dụng qk đơn
Ở câu trên "the man" là chủ ngữ nên dùng who