You are escaping from a fire that is generating quite a bit of smoke. which of these choices is an unsafe practice?

well you need to get to the ground as fast as possible. if your in bed roll onto the floor because. there is this thing called the thermal layer. it is this layer in the upper part of the ceiling it be up to thousands of degrees fahrenheit. if you breath in that air you will burn your lungs and instantly die you need to get out of the house as fast as possible. because there is going to be what's called a flash over. a flashover is when everything in the room catches on fire and there is a big explosion it will instantly kill you.

hope this

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."