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--Could you please sweep the floor?

-- _________．I have to do my homework．

A．Yes，sure            B．Yes，I could         C．Sorry，you can't      D．Sorry，I can't

——Could you please sweep the floor?

——______． I’m busy with my homework．

　 A．Yes，sure．　　　　　 B．Why not?　

　 C．Sorry, you can’t．　 D．Sorry, I can’t．

--Lisa，we need to clean the kitchen．Could you _______ the trash?

--Yes，sure．

A．take after        B．take off        C．take place       D．take out

--Could you please do the dishes after supper?

--________．I have to fold my clothes first．

A．Yes，sure            B．No，you can't                   C．Sure，help            D．Sorry，I can't