write two sentences for each situation. use when and while.
1)We/ski in the alps/see/an avalanche
2)they/watch the news/ the light/ go out
3)People /Sleep/the wildfire /arrive
4)I/do this exercise /the class/finish

1.We we skiing in the alps when we saw an avalanche.
We saw an avalanche while we were skiing.
2.We were watching the news when the light went out.
The light went out while we were watching the news.
3.People were sleeping when the wildfire arrived.
The wildfire arrived while people were sleeping.
4.I was doing this exercise when the class finished.
The class finished while I was doing this exercise.