Not until I left home did I realize how much my father meant to me.
A. I realized how much my father meant to me just when I was home.
B. I left home and didn’t realize how much my father meant to me.
C. It was only when I left home that I realized how much my father meant to me.
D. Before I left home, I had realized how much my father meant to me.
Câu trả lời là: C là đáp án đúng