Alice received an invitation from her boss, ____ _came as a surp

Alice received an invitation from her boss, ____ _came as a surprise.
A、it
B、that
C、which
D、he
【正确答案】：C
【题目解析】：【考点点击】本题考查非限制性关系分句中关系词的选择。【要点透析】由题干中的逗号可知,该分句为非限制性关系分句。在非限制性关系分句中,不能用that;A、D两项不能引导关系分句,所以答案为C。