Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉).
—It’s important for students to obey traffic rules. —Sure. Teachers always warn us ________ on the road because it’s very dangerous.
—Do you think teenagers _________ to make their own decisions? —No, I don’t agree with you. They’re too young to do that.
—Mike wants to know if ________ a picnic tomorrow. —Yes. But if it ________, we'll visit the museum instead.
—Could you tell me _____________________________? —Sure. It’s near the bank on the other side of the street.
—Mom, shall we go hiking tomorrow? —Oh, dear. That depends on it is fine tomorrow.