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				24．When the school building began to shake.the teachers ran downstairs          all the students．The teachers are real heroes．A．a(chǎn)fter          B．with          C．before			【查看更多】
			


		
     
    


		
    
		
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    When the school building began to shake，the teachers ran downstairs ________ all the students．The teachers are real heroes．
      
    A．a(chǎn)fter             B．with             C．before
    

			
    
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