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题目内容
（河南理工大学—大学英语1）
[单选题,2分] They __ ______ good friends and often visited each other.
A.are used to being
B.are used to be
C.used to being
D.used to be
A.are used to being
B.are used to be
C.used to being
D.used to be
参考答案
