They hoped to find new land which they thought _in Indian Ocean.
问题描述：
They hoped to find new land which they thought _in Indian Ocean.
A.exist B.existed C.existing D.to exist
我想知道为什么
答
这个句子是个定语从句.一个定语从句是可以转为有2个句子.这个句子本来是：They hoped to find new land.They thought new land (existed) in Indian Ocean.合起来就是这个答案了. 因为hope 和 think 都用了过去式hoped 和thought了.