22．The old professor said to us every part of the materials should be made use of the station. ——青夏教育精英家教网—

摘要：22．The old professor said to us every part of the materials should be made use of the station. A．to build B．building C．build D．built

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The old professor said to us every part of the materials should be made use of the station.

A．to build B．building C．build D．built

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