---Look! The light is still on. Is Mr Wu working in his office?---No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.
—Are these your grandparents? —No, ___________.
—_______ is your pen? —It’s yellow.
—_____ is your daughter? —She is fine.
—Is your name Gina Brown? —“____________”
—What color is it? —It’s ____ blue , it’s ____ blue ruler.