题目内容：

【高一英语】The parents will use____they have to send their son to technical school.
A.which
B.that
C.what
D.all
D为什么不对呢 “家长将用他们拥有的一切”不是也通嘛...

优质解答

The parents will use ____they have (to send their son to technical school)
what=all that
加all则all为定语从句先行词that不可省略