问题描述：
She is the only one of the students_______England?
She is the only one of the students_______England.
A who has been to ,B who have been to,C she has been to ,
D that have been to
She is the only one of the students_______England.
A who has been to ,B who have been to,C she has been to ,
D that have been to
问题解答：
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