单项选择题

Little is known of his childhood______at a factory at the early age often.

A. to begin to work
B. beginning to work
C. save that he began to work
D. about that he worked
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单项选择题
The contents of the safety deposit box are______being held by the police until the trial.
A. theoretically
B. temporarily
C. rationally
D. naturally
单项选择题
The small mountain village was______by the snow for more than one month.
A. cut back
B. cut out
C. cut off
D. cut away
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