问题
选择题
_____ how to pronounce the word, he stopped to look it up in a dictionary.[ ]
A. Knowing not
B. Not knowing
C. Not to know
D. Not known
答案
答案：B
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_____ how to pronounce the word, he stopped to look it up in a dictionary.[ ]
A. Knowing not
B. Not knowing
C. Not to know
D. Not known
答案：B