21.—I’ll do the washing-up. Jack, would you please do the floors?
—_______.
A．Yes, please B．No, I don’t C. Yes, sure D. No, not at all
答案：C
句意：—我要洗刷一下。杰克，请你擦地板好吗？—好的。
解析：考查交际用语。Would you please do….？是一个表示请求的句型，对该句型的回答，肯定同意
Sure./Certainly./Of course. / By all means./ Yes, do please. / Here you are. / Help yourself.(可以/当然/拿去/请便。)否定I’m afraid… (我恐怕……)I’m sorry, but… (对不起，但是……)I’m sorry you can’t. /You’d better not. (很抱歉，不行。/你最好别这样。)显然，只有Yes，sure符合语境。
