________ with some research materials, he decided on three possible approaches in his experiment.
As a leading producer of greenhouse gases, China the United States as the largest consumers of energy.
The song Take Me Home, Country Roads has much to people, for few people can avoid getting caught up in its originally real country music.
Nelson Mandela devoted all his life to the struggle of the African people and of every nation that seeks freedom.
Early experiences taught me not to be overly _ about shopping by mobile phone because there is a high risk of being cheated.
Although dishonesty seems so common in recent years, people still believe that honesty will not go out of .