介词填空 you've got to be quick our time is running （ ）

介词填空 you've got to be quick our time is running （ ）
you've got to be quick our time is running （ ）
can you believe the manager is up to his ears （ ）debt
（ ）such circumstances,I think you should go back home as soon as possible
（ ）the case,you have the right to refuse to pay （ ） the goods.
he stood( )silence,holding the picture close ( )his heart.
帮忙说明一下为什么要这样填……