(2013·杭州模拟)Children are excited about the approach of Christmas,
may bring great happiness to them.
A. it
B. which
C. what
D. that
网友回答
A. it
(答案→)B. which
C. what
D. that
解析：选B。考查非限制性定语从句。句意: 孩子们对于圣诞节的来临感到很兴奋, 它可以带给他们快乐。从句子结构分析可以排除it和what; that不能引导非限制性定语从句, 故选用which, 在定语从句中作主语。