The idea for the new machine came to Mr. Baker ______ to his invention recently.
—Can I help you, sir? —Yes. I bought this radio here yesterday, but it ________.
A left-luggage office is a place where bags ________ be left for a short time, especially at a railway station.
—I heard that they went skiing in the mountains last winter. —It ________ true because there was little snow there.
—Who is the girl standing over there? —Well, if you ________ know, her name is Mabel.
You and I could hardly work together,________?