It’s already 10 o’clock. I wonder how i____________that she was two hours late on such a short trip.
Since you have made such good preparations,there _______ be any problem about passing the coming exam.
My new novel has disappeared.Who _______ have taken it?
—The winner of the race is a tall and thin boy with thick glasses. —Then it _______ be my friend, Mike, who looks like a “meat ball”.
I am glad that you have managed to come.You _______ have brought wine.We’ve got plenty.
A left-luggage office is a place where bags _______ be left for a short time, especially at a railway station.