—It’s said that Wang Meng spent almost 10 hours training every day.—That’s true. She is really hard-working. ________, she won 3 golden medals in the 21st Winter Olympics.
My sister is very lazy. She _________ helps my parents with housework.
Who listens _____, in your class?
--- What’s the use of this kind of fuel(燃料) ? --- It can make the train __________ fast.
—Must we finish the project in a month? —No, you _______. A. mustn’t B. needn’t C. can’t
— Who taught ________ Japanese ? — I learned it by _________. A. you ; myself B. your ; me C. yourself ; myself