Sentence examples for lessons have been from inspiring English sources

Lessons have been learnt.

Some lessons have been learned.

It implies that lessons have been learned.

Some lessons have been less welcome.

"Lessons have been learned," pledges Mr Balogh.

What lessons have been learned?

Earle insists that lessons have been learned.

All these lessons have been forgotten.

Some of those lessons have been painful.

No doubt lessons have been learned".

Annan says the lessons have been learnt.