people in the world are suffering from the H1N1 flu.
My father has decided to ______ smoking. —-That’s good news for us.
What are you going to do this weekend?—–I’m going to help _____the city parks with my classmates to make them clean.
I always________ my brother at chess. But I don’t do so ______ as him in basketball.
Let’s do it ______. There is only five minutes left.