问题描述：
there ___to those are twenty-five in all,do you think that's enough?
there ___to those are twenty-five in all,do you think that's enough?
A, adding B,being added C.added D.to be added
there ___to those are twenty-five in all,do you think that's enough?
A, adding B,being added C.added D.to be added
问题解答：
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