问题补充：
--Where is Mary? I’d like to have a talk with her.
--She the library. You can find her there.
A. has been to
B. has gone to
C. has left
D. will leave
答案：
A. has been to
(答案→)B. has gone to
C. has left
D. will leave
解析：根据下文你能在那找到她，可知本句为现在完成时态。been to表示去过，现在在说话地。gone to表示已经去了，不在说话地。所以选B。
