用have been to ，have gone to 填空 My friend __to shanghai to have a meeting . He __there twice。

（1）have gone to （2）have been to have gone to 是去了未回 have been to 是去了已回

have gone to have been to 我的朋友已经去上海开会了，他已经去过两次了（曾经去过）

傻傻分不清楚了。

have been to 表示已经去了。
have gone to 表示去过。
所以分别填have been to have gone to

我记得 have gone to 是去了还没有回来
have been to 是已经去过了