Bộ 10 đề ôn thi học sinh giỏi Tiếng anh 9 năm 2023 có đáp án (Đề 5)
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For several centuries after the disintegration of the Roman Empire, the main source of water supply was from ______. A. springs and wells B. systems of aqueducts C. dams and canals

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For several centuries after the disintegration of the Roman Empire, the main source of water supply was from ______.

springs and wells

systems of aqueducts

dams and canals

water pipes

Giải thích

Chọn A