题目内容
20．I can't go to the party because I have to look after mysick（生病的） brother．分析 我不能去参加聚会，因为我得照顾我生病的弟弟．
解答 答案：sick．考查形容词．句意"我不能去参加聚会，因为我得照顾我生病的弟弟"．根据中文提示"生病的"，sick，形容词形式，修饰名词brother．答案是sick．
点评 单词填空类型题要充分理解句意，再根据单词提示完成试题，注意时态，单复数，词性等变化．
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