问题
选择题
－Mary，could you please post the letter for me while you are out?
－________
A．I'd rather you didn't.
B．It's OK with me.
C．What for?
D．By all means.
答案
答案：D
D 考查情景交际。肯定回答别人的请求用by all means，表示“当然可以了”。
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