___ you correct food foods ___be able to keep fit and stay healthy.A.Only if .will you B.Only if .you willC.Ulness .will you D.Unless .you will麻烦会的人说一下选什么的理由
问题描述：
___ you correct food foods ___be able to keep fit and stay healthy.
A.Only if .will you B.Only if .you will
C.Ulness .will you D.Unless .you will麻烦会的人说一下选什么的理由
答
选A
Only if 在句首时引起主谓部分倒装,假设部分用虚拟语气 意为只有……才
unless只有除非的意思