摘要： you eat the correct foods be able to keep fit and stay healthy. A. only if; will you B. Only if; you will C. Unless; will you D. Unless; you will [解析]选A 考查only条件状语从句置于句首.主句部分倒装.掌握句型only +if条件状语从句置于句首.主句部分倒装即可

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