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1. He suddenly appeared in class one day， (wear) sun glasses. 解析 考查现在分词。根据句子结构可知已有谓语动词appeared动词wear前又没有并列连词故应为非谓语动词作状语表示伴随情况；又因主语he与wear之间是主动关系故要用现在分词。 答案 wearing One morning，I was waiting at the bus stop，worried about (be) late for school. 答案 being I heard a passenger behind me shouting to the driver，but he refused (stop) until we reached the next stop. 解析 考查不定式。动词refuse后要接不定式作宾语拒绝做某事。 答案 to stop Still，the boy kept (ride).He was carrying something over his shoulder and shouting. 解析 考查固定短语。然而这个男孩一直骑个不停。keep doing sth一直做某事。 答案 riding We got a little (sunburn)，but the day had been so relaxing that we didn't mind. 解析 考查过去分词。我们有点晒黑了。动词sunburn晒黑此处get ＋ done结构为被动结构表示某一事件或事故的发生着重强调动作。 答案 sunburned/ sunburnt My older brother and I are busy | 
