问题补充：
Mary isn’t here. She has the shop.
A. been to
B. went to
C. gone to
D. been in
答案：
A. been to
B. went to
(答案→)C. gone to
D. been in
解析：句意：玛丽不在这儿。她已经去了商店。在完成时态中has been to 是已经去过某处，并且已经回来了。has gone to 是已经去了某处，但是到目前为止还没有回来。 has been in 是已经在某处，并且现在还在那里，而且有可能要延续下去。 结合语境可知选C。
