You arm is bleeding .--Yes ,I __it with a knife.A hurt B have just hurt

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You arm is bleeding .--Yes ,I __it with a knife.A hurt B have just hurt

You arm is bleeding .--Yes ,I __it with a knife.A hurt B have just hurt
You arm is bleeding .--Yes ,I __it with a knife.A hurt B have just hurt

You arm is bleeding .--Yes ,I __it with a knife.A hurt B have just hurt
B 现在完成式表示过去的事情对现在的影响.过去伤到了,导致现在还在流血.
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厄,我觉得均可

答案是B
句子的意思是
你的手臂在流血
是的,用刀子划伤了自己。
划伤的过程应该是完成的了。不可能一般现在时,也不能是过去时(所以不能是hurt)