题目内容：

15.—Turn off the TV,Jack..____ your homework now?
—Mum,just ten more minutes,please.[2007 辽宁卷]
A.Should you be doing B.Shouldn't you be doing
C.Couldn't you be doing D.Will you be doing
为什么选B?A有什么不对?

优质解答

翻译过来是你现在不应该写作业么?是反意疑问句.