—What’s on the desk? —There ______ a pen, a book and two keys.

 I'm afraid I have to go now, for my parents_______ outside.

 —Who’s the man over there? Is it Mr. Black? —It ______ be him. He’s much taller.

Tina ______ her mother. They are both tall and like to help others.

She _____________ a new novel she has written recently in the talk show.