Chinese netizens doubt_________ they called Western freedom of speech,seeing the dishonest reports.

问题描述:

Chinese netizens doubt_________ they called Western freedom of speech,seeing the dishonest reports.
Chinese netizens doubt_________ they called Western freedom of speech,seeing the dishonest reports about the recent riots in Tibet by some Western media.
A.that B.which C.what D.whether
选什么,为什么?A与C的区别在哪里?

c.what = the thing that...(doubt 应有宾语,所以用了 what 等于说,doubt the thing that they called Western freedom of speech.这里that 和后面的Western.speech 是 同位语)
that 错,因为它无法引导they called Western freedom of speech,doubt没了宾语