题目内容
Let me pinch your nose to stop ______.
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They'll also teach disaster _____ and first-aid to other employees and tourists.
It's very ____ here, so do go out for some fresh air.
It's hard for him to keep ______ since he had drunk so much.
The teams will be responsible for ______, first aid and ____ the alarm when fire or other emergencies strke.
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