一Tell us, Mark ,what is the ____ of the American Civil War?一 Well, is it because the black slaves wanted freedom?

Late again! What’s your ______ this time? 

Showing ______ to a current or former teacher is a fair reward and an act of gratitude that will also make you feel better.

Although dishonesty seems so common in recent years, people still believe that honesty will not go out of       ．

—Do you think she’s going to leave?     —The ______had crossed my mind.