They are still very cautious about ______ side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.
Sometimes we are asked ______ we think the likely result of an action will be.
He was lucky enough to sell his car for exactly ______.
When the holidays were drawing near, I asked my American friends ___ was the best way to travel in the United States.
He told me the news ____ the Queen would visit China the next month.
They lost their way in the forest and _____ made matters worse was that night began to fall.