The train is to start soon and Mary hasn’t turned up. What _____ have happened to her?
Jack is being ____ in hospital but I don’t know how soon he’ll be all right.
I wish you ______ go with me tomorrow.
We ________ the difficulty together, but why didn’t you tell me?
He will _______ you next week if he is free.
Oh, Mary, why are you killing your time this way ?Can’t you find something____ doing at all?