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	Were these landscapes created by humans? 
    by Monique Tapajós
     
    
	Date: 26 - Jul - 2012 
	Level: 
    intermediate 
    
    Age: +12 
    
    Description: 
This exercise practices the PASSIVE VOICE in the following tenses: simple present, present continuous, simple past and present perfect. Its topic is ROCK FORMATIONS AND NATURAL PROCESSES. 
    
    
	 
	
    
     
    
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