Our teachers are really ______. They often work in their office far into the night.

—Do you regret paying ten dollars for that book?—No，I would gladly have paid ________.

 ----Do you have any idea why Mark is leaving?---- No. In fact, everyone is ________about it．

You can never be ________ when crossing the street. 

 If what parents say is not ______ with what they do, it will have a bad effect on their children.