高等继续教育 / 专科英语II
正确率：100%
题型描述: 单选题
Helen was much kinder to her youngest son than to the others, ＿＿＿＿＿＿＿＿, of course, made the others unhappy.
A.what
B.who
C.which
D.that
Helen was much kinder to her youngest son than to the others, ＿＿＿＿＿＿＿＿, of course, made the others unhappy.
A.what
B.who
C.which
D.that
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