Who is the man over there? Is it Mr. Wu? — It ________ him, but I am not quite sure.
Our teachers gave us some ______ on how to study well.
Harry comes from ____ European country and he is ____ honest boy.
There must be something _______ the homes in our neighborhood.
The film star asked her _______ him. She was thrilled, because she really wanted to _______.
—Look! The man at the gate ________ be our teacher. He is always standing there every morning. —No, it ________ be him. He is having a meeting in the office now.