After 5 hours drive,they reached____they thought was the place they'd been dreaming of .A that B where C which D what为什么选D啊?
问题描述：
After 5 hours drive,they reached____they thought was the place they'd been dreaming of .
A that
B where
C which
D what
为什么选D啊?
答
本题为一个主语从句，BC项不能引导主语从句，先排除；
what=名词+that，而题目中缺少名词，所以选择D。
具体情况请参阅主语从句的语法
答
what作为was the place they'd been dreaming of .
的主语,有作为they reached宾语.
其他的无这个用法.