【单选题】When there’s a 52 , leave the classroom quickly. Smoke makes them 53 and they can’t breathe. It’s better to put 54 over your mouth and nose. 55 when you want to get out, you should make yourself close...
【单选题】When there’s a 52 , leave the classroom quickly. Smoke makes them 53 and they can’t breathe. It’s better to put 54 over your mouth and nose. 55 when you want to get out, you should make yourself close...