____ useful the computer is!
---- Is that Mr. Green? --- Impossible. He has gone to America. It ------be him.
Boys and girls, please listen to me _______. I have something important to tell you.
Get up quickly, Bill, ______ you`ll be late for school.
----Can I join the English club? ---Sure. Please show ______your school ID card.
Mike is my good friend. He is ________American boy.