名词性从句10.I am sure ____ he said is true.
问题描述：
名词性从句10.I am sure ____ he said is true.
A.that
B.about that
C.of that
D.that what
why
答
简单点说 I am sure that + 句子
这个句子必须是完整的有主 谓 宾 的句子
What he said is true.是一个完整句子
what he said 是主语 你可以把它理解为what是主语 (he said)是修饰what的