____ has been found out ____ oil food is bad for our healthA That ,that B That ,what C It ,what D It ,that CD怎么区别
问题描述：
____ has been found out ____ oil food is bad for our health
A That ,that B That ,what C It ,what D It ,that CD怎么区别
答
D.
it 引导形式主语，后面oil food is bad for our health，此句已有主语，无需再用what来代替。
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答
答案D
这是i
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答
D
oil food is bad for our health是个完整句，不缺少成分，所以用that 引导从句
答
选择D。It has been found out the oil food is bad for our health.
it当形式主语。
答
答案是D.It 在这里做形式主语,而that 引导一个真正的主语从句.又如：
It is said that our teacher will get married next week.
而C 只能这样用：
It has been found out that what he likes is money.