--_________ useful invention the computer is.--Yes, It helps us a lot.
His talk was nothing but milk and water. “milk and water” here means________.
— You look nice in the red skirt ! —_______________________.
—_______is your husband? — A doctor. He works in a hospital near our home.
—Where is your sister? —She _______a book in the yard.
—Today is Wednesday. What day is it tomorrow? —It’s________.