题目内容
20．Look！Thedancer in front of all other actresses is my sister．（dance）分析 看！在其他女演员前面的那个舞者是我的姐姐．
解答 答案：dancer．
提示词dance是动词，意为"跳舞"，根据所给单词结合 语境可以推测句意为"看！在其他女演员前面的那个舞者是我的姐姐．"，由于设空处单词前面有定冠词the，且在句子中作主语，所以应填dance的名词单数形式 dancer，故答案为：dancer．
点评 本题考查用所给单词的适当形式填空，首先要根据语境明确句意，然后再根据相关语法对所给单词在形式上做出正确的变化．
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