— I’m terribly sorry to keep you waiting for so long．
— _______．
| A．Never mind． | B．That’s right． | C．You are welcome． | D．Don’t mention it． |
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— I’m terribly sorry to keep you waiting for so long．
— _______．
| A．Never mind． | B．That’s right． | C．You are welcome． | D．Don’t mention it． |
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