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單項(xiàng)選擇題

Good evening, Professor Hardy. Good evening, John. Come in, please. Thank you, I hope I am not interrupting you. No,（）

A.thank you
B.not at all
C.thanks
D.let it alone

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單項(xiàng)選擇題

Good afternoon. Can I help you?（）

A.No. I don't think so.
B.Thank you.
C.I need to buy a birthday present for my son.
D.Yes. I think so

單項(xiàng)選擇題

Fortunately, Jack was only slightly injured in the traffic（）

A.incident
B.event
C.case
D.accident