Maria has written two novels，both of have been made into television series.
(2012·山东，23)
A. them
B. that
C. which
D. what
网友回答
A. them
B. that
C. which
D. what
解析：C
解析 句意为：玛丽娅已写了两部小说，它们都已被拍成了电视剧。分析题干结构可以看出：Maria has written two novels是一个完整的含“主谓宾”的句子。如果后半句也是个完整的句子的话，那么题干中的两个分句中间缺少连接词and，故A项不正确。由此不难看出空格处应用关系代词which引导非限制性定语从句，which代替先行词two novels。that作关系代词不能放于介词之后；what不能引导定语从句。分清句子结构是解答本题的关键。