(Viên chức Mầm non) 5000+ câu trắc nghiệm Ngoại ngữ có đáp án - Unit 14
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If you want to save your eyesight, we must operate immediately. Only by _____________________________________________________.

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If you want to save your eyesight, we must operate immediately.

Only by _____________________________________________________.

Giải thích

Only by operating immediately can we save your eyesight.