—Where is Mother?
—She is in the kitchen. She the housework all morning.
Adoes
B. has been doing
C. has done
D. was doing
网友回答
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。