After three hours'climbing，they reached they thought was the place they'd been dreaming of.
A. what
B. which
C. where
D. that
网友回答
(答案→)A. what
B. which
C. where
D. that
解析：考生误以为是地点状语从句，误选C.where。而reached是及物动词，后边接的是宾语从句，宾语从句除去插入语they thought后缺主语，所以应选what。