摘要： Proper first aid can save a seriously injured person, especially when he is bleeding heavily or . A. has poisoned B. has been poisoned C. was poisoned D. is poisoning
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Proper first aid can save a seriously injured person, especially when he is bleeding heavily or ________．
[ ]
A．
has poisoned
B．
has been poisoned
C．
was poisoned
D．
is poisoning
Proper first aid can save a seriously injured person, especially when he or she is bleeding heavily or _____ .
A. has poisoned B. was poisoned C. has been poisoned D. is poisoning
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Proper first aid can save a seriously injured person, especially when he or she is bleeding heavily or ________．
[ ]
A．has poisoned
B．was poisoned
C．has been poisoned
D．is poisoning