He could have finished it on , but he was ill last week and that was why he fell behind.
Tom was __________ a happy childhood, ______ most people would like to have.
He had been _______ good terms with Tom, but all of ____ sudden they lost in touch with each other.
Imagine what today’s life would be like if Alexander Bell _____ the telephone more than 130 years ago!
Their sudden attack made us more ________ of the danger around us.
Miss Li ___ as a secretary for five years in the company, and now she is general manager of it.