—Have you finished the book？
—No. I’ve read up to the children discover the secret cave.
A. which
B. what
C. that
D. where
网友回答
A. which
B. what
C. that
(答案→)D. where
解析：句意：--你看完那本书了吗？--没有，我刚读到孩子们发现洞的秘密的这个地方。这里是宾语从句，where引导的宾语从句，它在从句中作的是地点状语，根据句意故选D。