The professor treated her as one of his students. ✬

Our professor promised to hold off on the final exam for another week. ✬

The professor smiled. ✬

The professor solved the problem at last. ✬

Our professor paid the bill for all of us. ✬

I am a professor. ✬

We all took for granted that the professor could speak English. ✬

He's a professor of biology at Harvard. ✬

May I speak to the professor? ✬

She's my professor. ✬