It is already 10 o’clock. I wonder how it ______ that she was two hours later on such a short trip.
She not only entered the competitionshe __________ won it.
My computer is in good __________ and you can enjoy yourself on it.
—Have you finished your program,Yang Wei?—I’m afraid I __________ forgot about it.
—What was Kelly Chan’s concert?—It __________ everyone present.It’s a pity you’ve missed it.
Investigators are still trying to determine the __________ of the accident.