问题补充：
–I want to return the book to John, but I can’t find him.
--He the library. You can find him there.
A. has been to
B. has gone to
C. has left
D. went to
答案：
A. has been to
(答案→)B. has gone to
C. has left
D. went to
解析：本题所表示的含义是约翰去了图书馆，现在不在此处。表示某人去了某地，不再此处可用have或has gone to+地点名词，故本题选B。
