问题
选择题
_________ for his good skill,this doctor has a lot of visitors calling for help all the time.
A．Knowing
B．To know
C．Known
D．To have known
答案
答案：C
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_________ for his good skill,this doctor has a lot of visitors calling for help all the time.
A．Knowing
B．To know
C．Known
D．To have known
答案：C