如果划线部分为his friends
则:With whom did Wu yifan played football?
如果划线部分为played football
What did Wu yifan do with his friends?
如果划线部分为Wu yifan,不过这个可能性比较小
Who played football with his friends?
如果划线部分为his friends
则:With whom did Wu yifan played football?
如果划线部分为played football
What did Wu yifan do with his friends?
如果划线部分为Wu yifan,不过这个可能性比较小
Who played football with his friends?