John said he wasn't disappointed at the result of the basketball game, but the look on his face ________ him ________.

Tom didn’t break the glass by accident．It was _________．

(2014·江苏省三校4月阶段性考试)To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment.

 At the Olympic Games, only the athletes who have reached the agreed standard for their event will be______as competitors.

Most students think this book is useful as it ____ all the basic grammar rules they        need to know.