问题标题：
写出下列单词的过去式和过去分词：improvedescribesupportdevelop紧急!
问题描述：
写出下列单词的过去式和过去分词：improvedescribesupportdevelop紧急!
李鸿培回答：
imprvoe-improved-improved
describe-described-described
support-supported-supported
develop-developed-developed
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