41.   Ballet classes are important for poise and grace.

42.   The class was about modern monumental architecture.

43.   The class was involved in a heated discussion about politics.

44.   When is this class over?

45.   The class is meant to help you refine your writing style.

46.   Surprisingly, the class was quiet.

47.   This class is really difficult.

48.   As our classes were very large, I was only able to answer a couple of questions in each class period.

49.   There are several classes of corporate bond.

50.   The other important class of shares is preferred shares.