John, look at the time. __________you play the piano at such a late hour?
. Please remain __________ until the plane has come to a complete stop.
. “Things __________ never come again!” I couldn’t help talking to myself.
. Jenny hopes that Mr. Smith will suggest a good way to have her written English __________ in a short period.
. — Did Peter fix the computer himself? — He __________, because he doesn’t know much about computers.
. John received an invitation to dinner, and with his work __________, he gladly accepted it.