He stood there for two hours ____ the game.
—Thanks a million for your timely help!—________
The real cause of the problem ________ the poor construction of the bridge.
It is reported that a similar technique can be ________ to the treatment of cancer.
By the time I saw the job ________ in the newspaper,it was already too late.
They won't let him out of the hospital ________ he's completely recovered.