Rewrite the sentences, use the verbs in the passive form: milk/ contain/ paper boxes nowadays

I.rewrite the sentences. use the verbs in the passive form
a)milk/contain/paper boxes nowadays
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b)that beautiful toy/make/from recycled paper
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c)dried sugar canes?reuse?to produce paper
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II.tun into the passive from
a)people cut the bottles into small pieces
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b)people mix the small pieces with certain chemicals
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c)people heat the mixture into pasty liquid
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