Question

Maria has written two novels, both of ________ have been made into television series.
    A. them     B. that       C. which                                D. what

Answer 1

解析：【答案】C
【命题透视】“介词+which”引导的非限制性定语从句。考查基础语法知识并运用其分析解答问题的能力。
【试题解析】句中的先行词是two novels，而且后面是一个非限制性定语从句，因此用both of which引导。That不能引导非限制性定语从句，也不能跟在介词后面；如果选them，则后面需要有并列连词and或者是独立主格结构，即both of them made into...。