11.   They seem to be serious about their relationship.

12.   Yes, Jason Kidd said, he was quite serious about trying his hand at professional baseball.

13.   Are you serious about this, or are you just fucking around?

14.   He was getting more serious about her.

15.   While Sussman was neat and serious about studying, his roommate was messy and liked to party into the early hours of the morning.

16.   He had not the stomach, literally, to wax serious about such things today.

17.   Though he does speak a lot it is hard to distinguish the jokes from what he is being serious about.

18.   What is serious about so much school work generally is that so frequently it seems to fail to have any deep effect on life outside the classroom.

19.   This morning, Richardson decided I still did not appreciate that he was serious about the money.