I had walked a few steps _______ I realized that I was lost in the thick fog.
He wrote ______ song, which turned out to be rather popular with ______ young.
--- What would you like, sir? --- ______.
______ are very popular with people all over the world, but do you know who was it that invented ______ telephone?
--- Who did you spend last weekend with? --- ______.
Miss Smith is a friend of ______.