Only when we saw the photos about the air crash_____ how terrible it was.A had we known B we had known C did we know D we knew
----- Could I use your electric dictionary? ----- Yes._______.
My father is usually on _______ duty in his office every _______ few days.
It is none of your business ______ other people think about you.Believe yourself.
---Come on, please give me some ideas about the project.--- Sorry.With so much work ______ my mind, I almost break down.
With the good care taken by doctors and nurses, many patients are beginning to _________.