The boy lay on his back, with his teeth______, his right hand_______, and his glaring eyes ________ _straight upward.
My uncle has a lot of books, _______ are about computer science and technology.
He, along with his brothers, ______ how serious the situation is.
This is the factory ________ we visited last Monday.
______ you have finished your work, you ought to have a good rest.
All of her time was devoted to_______ her homework, so she had no time to have fun.