Helen was much kinder to her youngest child than she was to the others, (__) of course, made the others jealous.
A. who
B. that
C. what
D. which
参考答案与解析
答案:D
解析:考查非限制性定语从句。句意:Helen对她最小的孩子比对其他孩子要好得多,这当然引起了其他孩子的嫉妒。空格前是主句,空格后的of course为插入语,made the others jealous则是对主句的补充说明,再根据空格前的逗号可判断这里是典型的非限制性定语从句的用法,需要用which引导。