A:DoyoumissMrChen?B:Yes.Ido.

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A: Do you miss Mr Chen?

B: Yes. I do._ have you ever heard of him since he left?

A．By the way

B．On the way

C．in the way

【解析】句意：——你想念陈老师吗?——是的。顺便问一下，从他离开后，你听说过他吗？A. By the way顺便说一下，顺便问一下；B. On the way在路上；C. in the way以……种方式。在句中作*入语，“顺便问一下，顺便说一下”：by the way。故选A。