Lisa doesn’t know ______ she and her friends can do to help the little boy ______ parents have left their hometown for making money.
Yao Ming is a _____basketball player.He plays basketball_____.
_______ weekdays we go to school _______ seven o’clock.
--- Are these your books? --- No, _____ aren’t. _____ books are in the bag.
_____ your sister have a ball or a bat?
Saturday is the _____ day of a week.