【2013绥化】It’s said that ______ apple ________ day keeps the doctor away. A. a; an B.an; a C. the; the
Turn on the TV and there is _________.
Fish sleep _____ their eyes ______.
Are you _____ in these _____story books.
——Who watered the flowers beside the window? ——Helen ____________.
It is _______ unusual thing for us to find ________ UFO.