填空题 Mark Twain was a well-known American writer. Mark Twain was ______ his American novels and stories.
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【正确答案】 1、{{U}}famous for{{/U}}    
【答案解析】[解析] 分析结构：用形容词well-known表示出名的意思，考点为词组的改写。对比填空：原句中是well-known，改写的句子中要使用be famous for词组来表达同样的意思。所以正确答案为famous for。