24．When the school building began to shake.the teachers ran downstairs all the students．The——青夏教育精英家教网—

摘要：24．When the school building began to shake.the teachers ran downstairs all the students．The teachers are real heroes．A．after B．with C．before

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When the school building began to shake，the teachers ran downstairs ________ all the students．The teachers are real heroes．

A．after B．with C．before

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