5000 câu trắc nghiệm Tiếng Anh 9 có đáp án - Phần 9
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I was sad when I sold my car. I_____ it for a very long time. a. am running b. were running

17/20

I was sad when I sold my car. I_____ it for a very long time.

am running

were running

had been running

have been running

Giải thích

Chọn đáp án C