1.   Did I need protection, or was the professor miffed for his own reasons?

2.   Fortunately, the professor was annoyed and slipped in and nailed the guy.

3.   In those days, a woman professor was still an anomaly.

4.   The old professor was obviously a very learned man.

5.   The professor was so boring, hardly anyone came to class.

6.   Traditionally, professors were the heads of academic departments.

7.   The professor had been pugnacious and irritable.

8.   Several professors will be on sabbatical this year.

9.   The professor is something of an outcast in the halls of academe now that his former support of a dictatorial regime has become public.

10.   Our professor is on leave this semester.