Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đầy đủ đáp án (Đề 7)

For instance, a person who has (81) little vitamin B1 will suffer from beri-beri, a disease that causes heart problems and mental disorders

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For instance, a person who has (81) ………………………….little vitamin B1 will suffer from beri-beri, a disease that causes heart problems and mental disorders

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Giải thích

Đáp án: For instance, a person who has (81) too little vitamin B1 will suffer from beri-beri, a disease that causes heart problems and mental disorders.