11.   We knew at City that just a generation earlier people had gone to our college for important reasons, for political reasons.

12.   What I did not know at the time was that his drinking problem stemmed from his drug problem.

13.   He likes to make his opinions known at every opportunity.

14.   I went over to start up a conversation, asking her who she knew at the party.

15.   I want to know at what point I break the speed limit and get a ticket.

16.   College is a place where typically no one knows you at first, so you can be whoever you want to be.

17.   And the ones that we know about at the moment are the ones revealed from the census.

18.   The defect in any case may not have been known at the time of the sale.

19.   I will say that Roy dealt with it, when it happened and I know at the time he, he was very very thorough over it.

20.   They did not know at the beginning of the week how much they would bring home at the end.