When the sick mother got up, she was surprised to find that her six-year-old daughter in the kitchen.
A. had cooked
B. has cooked
C. was cooking
D. cooked
网友回答
A. had cooked
B. has cooked
(答案→)C. was cooking
D. cooked
解析：句意：当生病的妈妈起来的时候，她很惊讶的发现她六岁的女儿正在厨房做饭。Cook这个动作是发生在：When the sick mother got up,所以用过去进行时，选C。