问题
选择题
The poor child stood there, and ________ what to do, turned to his father for help. [ ]
A. not knowing
B. not knew
C. not to know
D. not know
答案
答案：A
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The poor child stood there, and ________ what to do, turned to his father for help. [ ]
A. not knowing
B. not knew
C. not to know
D. not know
答案：A