问题补充:
—I hear Mr. Zhang has gone to Beijing for a meeting.
—Really? Do you know when he ?
A. leaves
B. was leaving
C. has left
D. left
答案:
A. leaves
B. was leaving
C. has left
(答案→)D. left
解析:考查动词的时态用法。根据“has gone to Beijing”可知他已经去了北京,所以离开的时间在过去,用一般过去时。