In the early morning my mother was in the kitchen ______ breakfa

In the early morning my mother was in the kitchen ______ breakfast for us.
A、prepared
B、having prepared
C、preparing
D、to have prepared
【正确答案】：C
【题目解析】：本题考查现在分词做伴随状语。由题干可知该句子完整，不缺谓语，故排除A。根据句意，没有涉及到完成时，排除B和D。只有选C,表示妈妈在厨房，伴随的状态是给我们准备早餐。答案为C。