There is reason to believe that most writers have difficulty in ______ the opening paragraphs of their papers.

According to the recent research, heavy coffee drinking and heart attack is not necessarily ______ and effect.

 See what you have done !Don’t have you a ____ of right and wrong ?

My early_______ at learning playing the piano was a failure although I took a fancy to it.

This book gives a brief _____ of the history of the castle and details of the art collection in the main hall.