The boy was with three friends and 20 other people when the accident happened.

Also, a second major accident happened at the end of the race.

The accident happened on the private road around our site.

Four men were working on board when the accident happened.

No one could say exactly where the accident happened or when.

His friend asked him to tell how the accident had happened.

Like you, these people probably thought an accident would never happen to them.

The accident happened as students were making their way home from school.

They'd been married just eight weeks when the accident happened.

But it looks very much as if the accident happened here.