They are asking anyone who saw the accident ()(contact)them.动词填空The man was attacked with a gun and ()(bleed)to death

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They are asking anyone who saw the accident ()(contact)them.动词填空
The man was attacked with a gun and ()(bleed)to death

to contact
bled

to contact
bleeding

用它的过去式嘛---contacted 明显地 这里contacted和saw并列