23．Six billion people already live on our planet, and the number is growing 220,000 every day．——青夏教育精英家教网—

摘要：23．Six billion people already live on our planet, and the number is growing 220,000 every day． A．with B．in C．from D．by

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Six billion people already live on our planet, and the number is growing _____ 220,000 every day．

A．with B．in C．from D．by

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