单选题   George wasn't in class today. Professor Brown excused him ______.
 
【正确答案】 B
【答案解析】乔治今天没有上课,布朗教授允许他请假。 考查非谓语动词。excuse sb. from doing sth.意为“同意免除,同意免做”。前—个句子讲乔治没有上课,根据句意,答案应为B。