_________ a lot of troublesome affairs to deal with,our boss doesn't have any time to spend holidays.
—Next week we’ll have the final English exam. —Yes. Then, every minute must be made full use ________ English.
—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.