问题
选择题
Noticing a boy fall off his bicycle, Mike ran over _____ if he was hurt. [ ]
A. seeing
B. to see
C. saw
D. seen
答案
答案：B
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Noticing a boy fall off his bicycle, Mike ran over _____ if he was hurt. [ ]
A. seeing
B. to see
C. saw
D. seen
答案：B