问题
选择题
The room _________ as a meeting room. [ ]
A. used to being used
B. was used to be used
C. was used to being used
D. used to be used
答案
答案：D
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The room _________ as a meeting room. [ ]
A. used to being used
B. was used to be used
C. was used to being used
D. used to be used
答案：D