— Turn off the TV, Jack. your homework now?
— Mum, just ten more minutes, please.
A. Should you be doing
B. Shouldn’t you be doing
C. Couldn’t you be doing
D. Will you be doing
网友回答
A. Should you be doing
(答案→)B. Shouldn’t you be doing
C. Couldn’t you be doing
D. Will you be doing
解析：Jack在看电视，母亲希望他做作业，shouldn’t带责备之意。