Read and Listen To Sentences Using the Word

Why did this happen?
Accidents will happen.
That didn't really happen.
Don't let that happen again!
I didn't want this to happen.
How did the traffic accident happen?
I don't know when, but it'll happen someday.
What will happen if there's power failure now?
A lot of people are waiting to see what is going to happen.
Most car accidents happen because drivers aren't paying attention.