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
A
【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。在句中作插入语,“顺便问一下,顺便说一下”:by the way。故选A。