Question

18. 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

Answer 1

18.   C考查动词的时态。句意：当生病的妈妈起来的时候，她很惊讶地发现她六岁的女儿正在厨房做饭。cook这个动作发生在when the sick mother got up，所以用过去进行时。选C。