What is concerning us greatly is ________ the workers held up in that area yesterday will be set free.

I will always remember the days_____ I spent with youin that village

In a sports team each player has a clear role，and there are few occasions_____ members are confused or uncertain of their roles

She is so ______ that no one can everpersuade her.

We must get up early tomorrow,_______we’ll miss the first bus to the Great Wall.[ ]