He expressed the hope____possible,he would come and visit it again.

问题描述:

He expressed the hope____possible,he would come and visit it again.
[A] that [B] if [C] when [D] that if
并说明句型结构,

D.
He expressed the hope that (if possible) he would come and visit it again.
定语从句修饰宾语hope.if possible 是插入语.
他表达了(如果有可能)能再次来参观的希望