I didn't know you were coming, so I didn't wait for you

Câu hỏi :

I didn't know you were coming, so I didn't wait for you.

A.Were I to know you were coming, I would wait for you. 

B. If I had known you were coming, I would wait for you. 

C. Had I known you were coming, I would have waited for you. 

D. If I knew you were coming, I would wait for you.

* Đáp án

* Hướng dẫn giải

Đáp án là C. whose + N : thay thế cho tính từ sở hữu, trong câu này là “his”

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