问题描述：
_____full preparations.the President referred to his notes now and then when giving the speech.
A.Not having made B.Not made
C.Not to have made D.Not to make
请帮忙翻译,并分析选与不选的原因.
A.Not having made B.Not made
C.Not to have made D.Not to make
请帮忙翻译,并分析选与不选的原因.
问题解答：
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