There ______ a large number of students in our school. The number of the students_______ over three thousand.
— Is that your ID card? — Yes, it is. It is _______.
—______ is his backpack? —It is on the sofa.
—______ your jackets? —Yes, they are.
______, Cindy. Is that your clock?
Alice is a girl. ______ last name is Smith.