单项选择题

The White House is open ______ every morning.

A. for public
B. for the public
C. to the public
D. to public
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单项选择题
He ______ his life ______ the abolition of. slavery.
A. dedicated... to
B. devoted... for
C. spent... in
D. gave ... for
单项选择题
A stove is not up-to-date unless it has a mechanism ______ controlling the temperature.
A. capable of
B. able to
C. ability of
D. capacity of
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