----Could you please sweep the floor?
---_____________. I have to do my homework first.
| A．Yes, sure. | B．Why not? |
| C．Sorry, you can’t. | D．Sorry, I can’t. |
----Could you please sweep the floor?
---_____________. I have to do my homework first.
| A．Yes, sure. | B．Why not? |
| C．Sorry, you can’t. | D．Sorry, I can’t. |
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