Bộ 10 đề ôn thi học sinh giỏi Tiếng anh 9 năm 2023 có đáp án (Đề 2)

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

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

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Giải thích

If I had known you were coming, I would have waited for you.