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				22．Ricky caught a bad cold  yesterday.        he had to  stay at home．A．because        B．but           C．or             D．so			【查看更多】
			


		
     
    


		
    
		
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    Ricky caught a bad cold yesterday，              he had to stay at home．
      
    A．because               B．but                      C．or                          D．so
    

			
    
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