________, sheep were then used for wool. A. Having first domesticated for milk production B. Having been first domesticated for milk production C. Because they had been first domesticated

196/400

________, sheep were then used for wool.

Having first domesticated for milk production

Having been first domesticated for milk production

Because they had been first domesticated for milk production

Although they had first domesticated for milk production

Giải thích

Domesticate (v): thuần hóa

Chủ ngữ là “sheep” → “domesticate” cần chia dạng bị động → loại A, D.

C sai ở “Because” (không hợp lý về ngữ nghĩa câu Chọn B)

Dịch: Đã được thuần hóa đầu tiên để sản xuất sữa, cừu sau đó được dùng để làm len.