It is no use _________ to persuade him ________ smoking because he has been addicted to it since he wasyoung.
17.——Honey, please don’t play the computer games.——Pardon ?——I ______ play the computer games.
16.He’ll never forget the years _______ he studied with his cousin in Oxford University.
15.The book Been There, Done That written by a Chinese American graduate is _____a real story.
14.The number of the people who joined in the journey down the Mekong River____four.
13.Whenever we are in ____ trouble, we should never lose______heart.