My mother my aunt called her.A. was cooking whileB. cooked whenC. cooked whileD. was cook

问题补充：

My mother my aunt called her.

A. was cooking while

B. cooked when

C. cooked while

D. was cooking when

答案：

A. was cooking while

B. cooked when

C. cooked while

(答案→)D. was cooking when

解析：考查时态。句意; 当阿姨打电话给我的时候，我的妈妈正在做饭。故用过去进行时。而call 是短暂动词，故用连词when。