问题补充：
After five hours’ drive, they reached they thought was the place they had been dreaming of.
A. what
B. that
C. which
D. where
答案：
(答案→)A. what
B. that
C. which
D. where
解析：句意为：在五个小时的驱车之后，他们到达了他们认为是他们梦想了很久的地方。选项中考查的是宾语从句的连接词，句中they thought属于插入语，去掉后，很明显宾语从句中缺少主语，只有what与which可作主语，而which必须有选择范围，句子的意思没有表示哪一个的含义，故答案应为A。
