Trắc nghiệm tổng hợp Tiếng anh có đáp án 2023 (Phần 30)

When Mark was lying down, the bear came and attacked him.

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When Mark was lying down, the bear came and attacked him.

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Giải thích

3. TDẫn chứng “When Mark was lying down, the bear came and said something to him.”