问题
选择题
______into the accident, the police concluded that both of the drivers were responsible for it．
A．Having looked
B．Looked
C．To look
D．To be looking
答案
答案：A
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______into the accident, the police concluded that both of the drivers were responsible for it．
A．Having looked
B．Looked
C．To look
D．To be looking
答案：A