Helen was much kinder to her youngest child than she was to the others, _____, of course, made them jealous.
A.what
B.which
C.who
D.that
正确答案是B
Helen was much kinder to her youngest child than she was to the others, _____, of course, made them jealous.
A.what
B.which
C.who
D.that
正确答案是B