将下列句子中的主动语态变为被动语态
【小题1】The head teacher is organizing a student trip to the art museum.
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【小题2】The workers are painting the newly-built library now.
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【小题3】The viewers are discussing the performance given by our students.
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【小题4】They are studying the mice at the research centre in order to find the cure for the disease as soon as possible.
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【小题5】Please wait here. The doctors are operating on the patient right now.
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