单选题 Mr. Johnson evidently regarded this as a great joke.
【正确答案】 B
【答案解析】[解析] 本句意思：约翰逊先生明显把这当作一个大玩笑。evidently意思是“明显地，显然地”，与obviously(明显地)意思相近。readily欣然地，乐意地；casually随意地；simply简单地。