问题
选择题
I hold it in my hands as if holding all the lives in the world, ______what to do with it. [ ]
A. didn't know
B. not knowing
C. not having known
D. not know
答案
答案：B
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I hold it in my hands as if holding all the lives in the world, ______what to do with it. [ ]
A. didn't know
B. not knowing
C. not having known
D. not know
答案：B