–Whose shirt is this?--It _______ be Li Lei’s. It is too big for him.
—_____ are they?—They are my sisters.
— Jane, are your _______ teachers? — No, my mother is a teacher. My father is a doctor.
—What is this ______English? — It’s a dictionary.
That’s a watch. It’s ____ old watch.
— _____. Is this your ruler? — Oh, yes. Thank you.