The computer in 1946 in America.
Oh, boy, why are you killing your time this way? Can’t you find something ________ doing?
His aunt ________ Beijing and she will stay there for three years.
You ______ to the meeting this afternoon if you have something important to do.
---Why don’t we take a little break? ---Didn’t we just have one?
---Hello, Golden Seaside Hotel. Can I help you? ---Do you have a room ______ for this weekend?