题目内容
17.hear(过去式)heard.分析 hear:听
解答 答案:heard 考查单词填空.根据题干:hear意为听,它的过去式是heard
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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