Albert! It’s time for you to go to bed, _________ you will feel tired tomorrow.
It is wrong of a student ______ his homework by himself. Copying makes one lazy.
—The theatre is far away and there is no bus. —Do you mean it is ______ to take a taxi?
—I hear Tom is leaving.— ____________ why?
—Huang Wei rides a bike very well. Who taught him? —No one. He taught _________.
— What a heavy rain! Will it last long? — ______ . We are getting into the raining season now.