I’m going to buy a car. Any advice, Charlie?—Well, it depends on(根据) ________. If money isn’t a problem, you can buy a BMW.

Jack, is this your jacket?–No, it _______ be my jacket. My jacket is black but this one is blue.

He does his homework _____ he gets home.

Our teacher said that light______ faster than sound.

______ are you staying there? —For about 3 days. I don’t like to be away for too long. [ ]