—I hear Mr. Zhang has gone to Beijing for a meeting. —Really? Do you know when he ?A. leav

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。