---Look at the glasses on the desk. Are they David’s?---They belong to him. I saw him go out with glasses just now.
—How old is Tom? —He is ____.
—____ your sister know Lucy? —No, she ____.
—Is this your book, Alice? —Yes, it is ____ book.
—Boys and girls, welcome to my home and ____. --Thank you.
My brother wants ____ orange, not ____ orange juice,