What does “they” refer to?
Giải bởi Vietjack
Đáp án C
Dẫn chứng trong bài đọc: “ We do not know exactly when or how people first used fire. Perhaps, many ages ago, they found that sticks would burn if they were dropped into some hole ...” (Chúng ta không biết chính xác lúc nào hay bằng cách nào mà con người sử dụng lửa. Có lẽ, cách đây rất lâu, họ phát hiện ra que củi sẽ cháy nếu chúng rơi vào hố mà...)
Vậy: they = sticks
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