After five hours’ drive they reachedthey thought was the place they had been dreaming.A.

问题补充：

After five hours’ drive, they reachedthey thought was the place they had been dreaming.

A. that

B. where

C. which

D. what

答案：

A. that

B. where

C. which

(答案→)D. what

解析：考查名词性从句，they thought 后缺少宾语因此填what 。