问题描述：
Enough___ on how to take useful things out of rubbish,so much for today.
A.has said B.was said C.has been said D.will be said
请说明选什么,以及为什么.
A.has said B.was said C.has been said D.will be said
请说明选什么,以及为什么.
问题解答：
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