The word “they” in paragraph 3 refers to___________. A. guides B. holes C. the whales D. warmer waters

Đáp án C

Từ “they” ở đoạn 3 ám chỉ đến____________.
They cut holes in the ice to provide more breathing holes for the whales. These holes would also serve as guides for the whales so that they could swim to warmer waters. Đáp án C: they là đại từ thay thế cho “the whales”.