The shop assistant priced the goods before (put)______them on the shelf.

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问题 The shop assistant priced the goods before (put)______them on the shelf.

选项

答案putting

解析店员在把货物上架之前先定价。词性转换。当主句中的谓语动词和before从句中的谓语动词主语为同一个人时，before后面用动词的-ing形式。所以将put转换成putting。

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大学英语三级A级

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