There is a poisonous chemical in milk. Have you considered it? A. to change B. changed——青夏教育精英家教网—

摘要： There is a poisonous chemical in milk. Have you considered it? A. to change B. changed C. changing D. being changed

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There is a poisonous chemical in milk. Have you considered _______ it?

A. to change B. changed C. changing D. being changed

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