When he the door, he found his keys were nowhere.
This book __________ 18 articles, __________ three written by my father.
Beauty is in the eye of the watcher and the same is true __________ both the appreciation of art and music.
Mr Zhang, a man calling himself Peter, __________ all day. Could you speak to him now?
Of all the plays __________ recently, none is more impressive than Tea House by Lao She.
—Is there a place __________? —I'm afraid there're no other places free at the moment.