问题
选择题
The constitution, unlike other forms of laws, is fundamental ______ our social system working properly. [ ]
A. for keeping
B. to keeping
C. to keep
D. with keeping
答案
答案：B
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The constitution, unlike other forms of laws, is fundamental ______ our social system working properly. [ ]
A. for keeping
B. to keeping
C. to keep
D. with keeping
答案：B