1.   A number of them learned valuable lessons from difficult bosses-some even from bad bosses.

2.   Apparently, they learned a lesson from the O. J. Simpson criminal trial by avoiding boring and time-consuming chronological presentations.

3.   He has learnt his lesson through being seduced by the Older Woman.

4.   He learnt the lesson well, and has since produced an impressive and highly original body of work.

5.   In practice the lesson must be learned anew.

6.   It should be a frank two-way discussion from which useful lessons can be learnt for the future.

7.   It will also have learned a few lessons in how not to go about setting up a business.