when did you start to play tennis?A.when I was ten b.since two years ago为什么
问题描述:
when did you start to play tennis?A.when I was ten b.since two years ago为什么
答
A.when I was ten 当我10岁时,用过去时
B.since two years ago 自从2年前以来,用现在完成时
所以选A