单选题 The man told the visitor that he had accidentally driven his vehicle over the canyon rim.

单选题 As they roam the lush pastures ruminating, they make a delicious music of their own.

单选题 How had he amassed his fortune?

单选题 The banks should have been more circumspect in their dealings.

单选题 In most countries, changing trains tends to be a sordid ordeal of waiting and of discomfort.

单选题 Those who embark on the quest for knowledge of the best regime may not return the same people that they were before.

单选题 I took out a fresh sheet of paper and tried to solve a problem that had intrigued me.

单选题 The fields vegetate vigorously.