______are you going to stay there? —______a week. [ ]

Paul, do you _________ an American friend?—No, I don’t. But my sister __________ one.

How did the accident happen? —You know, it ________difficult to see the road clearly because it_________.

You look tired. What’s the matter?—I cared for my sick daughter all day.

Jim, this is your sports shoe. where is?