----Where is Tom?----He’s left a(n) _____ saying that he has something important to do.

The plane is a flying eye hospital that belongs to a medical charity called _______.

— When will the London 2012 Olympic Games start?— It will start on July 27th. You can visit London this ________.

I am ________ ，I am an English boy. 

Mr. Wu is a teacher with _______. He often tells us some of his unusual _______ in America.