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				26．--Our  environment is getting Worse than before．  --You’re right．But thanks to Earth Day, people have done more and more useful  things to protectthe earth since Earth Day        ．A．is started       B．was started      C．has started			【查看更多】
			


		
           
          


		
          
		
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          --Our environment is getting Worse than before．
            
          --You’re right．But thanks to Earth Day, people have done more and more useful things to protect(保護(hù))the earth since Earth Day               ．
            
          A．is started              B．was started          C．has started
          

			
          
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