—Which hat do you like___, the blue one or the brown one? —The brown one.
—How do you study English well?—__________ working hard.
—It looks like rain, __________?—Yes, it does. And I forgot my umbrella.
Sam came to Baihai in 2002. He __________ here for nine years.
You’ll be late __________ you don’t get up now.
—When _________ the car _______ ?—Sorry. I don’t know.