One Sunday several former classmates gat
题型：选择题
问题：
One Sunday several former classmates gathered at Tom’s for lunch, ______ their high schoolreunion the year before.
A．talking about
B．having talked about
C．to talk about
D．talked about
One Sunday several former classmates gathered at Tom’s for lunch, ______ their high schoolreunion the year before.
A．talking about
B．having talked about
C．to talk about
D．talked about