The children have been playing with my hat ---they’ve knocked it out of _____. 

.The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.

We are good friends though he is ten years ________ to me.

 In Scandinavian countries it is common ____ for the husband to stay at home to look after the baby.

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