问题
选择题
The key you have just got ____ the front door. [ ]
A. is used to opening
B. is used to be opened
C. is used to being opened
D. is used to open
答案
答案：D
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The key you have just got ____ the front door. [ ]
A. is used to opening
B. is used to be opened
C. is used to being opened
D. is used to open
答案：D