Wang Dong is a good boy ,he __________ for school.
Albert! It’s time for you to go to bed, _________ you will feel tired tomorrow.
While my brother _______ football with his friends yesterday, my sister _______ her homework.
—Excuse me, sir, smoking _________ in the gas station.— Oh, I’m really sorry.
Mr. Green with his sons and daughters often _________ a walk in the park after supper.
The _________ careful you are, the _________ mistakes you will make.