Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án (Đề 7)
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Fire was very important to man. He needed fire to (76) …………………… himself warm at night.

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Fire was very important to man. He needed fire to (76) ……………………himself warm at night.

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Fire was very important to man. He needed fire to (76) keep himself warm at night