问题补充:
—Where is Mother?
—She is in the kitchen. She the housework all morning.
Adoes
B. has been doing
C. has done
D. was doing
答案:
A. does
B. has been doing
C. has done
D. was doing
解析:句意:--妈妈在哪里?--她在厨房,她一个早上都在做家务。表示母亲一上午都在做家务,现在仍在厨房做,故应用现在完成进行时,表示从过去至今一直在持续的动作。选B。