AWNSER HELP CMON ASAP JUST DO IT CMON DUDE WEW WOW OWO CMONN
Which sentence is punctuated correctly?
I crouched low covered my mouth and nose and braced for impact.
After the avalanche stopped, we dug ourselves out of the barricade.
That morning began without a hitch, as we headed up the mountain.
Without warning, a massive wall of snow, suddenly slid above us.