问题详情：
改错：(2020·河南省高三阶段*考试)When asking how the public would help beautify Utah Lake, the lake's official workers suggested picking up garbage.
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【回答】
asking→asked 当状语从句的主语和主句的主语一致，且从句中含有be动词时，可以省略从句中的主语和be动词。从句中的ask和主语the lake's official workers为被动关系，意为“被问及……”，故用过去分词形式，when asked＝when they were asked。
知识点：其他
题型：短文改错
