— 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

B


解析:

Jack在看電視，母親希望他做作業(yè)，shouldn’t帶責(zé)備之意。

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