Câu hỏi :

I last saw Bob when I was in Ho Chi Minh City.

A. I didn't see Bob since I was in Ho Chi Minh City.

B. I could see Bob if I was in Ho Chi Minh City.

C. I haven't seen Bob since I was in Ho Chi Minh City.

D. When I was in Ho Chi Minh City, I saw Bob.

* Đáp án

* Hướng dẫn giải

Chọn đáp án C

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