问题描述：
No one told us ________,so we need your help.
A how to do it B what to do it C how should we do D what should we do A对的是吗 能告诉我其他为什么错吗
A how to do it B what to do it C how should we do D what should we do A对的是吗 能告诉我其他为什么错吗
问题解答：
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