题海让大学四年没有难题
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题目详情

单选题 What is the passive form of the sentence "They produce crystal sugar in the factory"

A. Crystal sugar is being produced in the factory

B. Crystal sugar will be produced in the factory

C. Crystal sugar has been produced in the factory

D. Crystal sugar was produced in the factory

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时间:2025-10-15 07:25:39

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