It is well known (what ) a person eats causes changes in the body.这是个名从、为么就不填that what..名从中的引导词how,

It is well known (what ) a person eats causes changes in the body.这是个名从、为么就不填that what..名从中的引导词how,

题目
It is well known (what ) a person eats causes changes in the body.这是个名从、为么就不填that what..名从中的引导词how,what,which,where和that遇见时、是不是就要把that省了?
答案
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