You've got to understand that I'm the only teacher for this entire group.

He was the only teacher who died in the attack.

He was the only teacher killed in the school shooting.

You're not the only teacher in state schools I know.

Her father was the only native teacher of French in a colonial school.

And you have been the only teacher in the matter.

The only other teacher had been fired a month before.

Jean-Claude as my only teacher is just not a good idea.

You'd think she was the only teacher in the country.

Experience, it seems, is the only existing teacher of how to be a good politician.