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          As everyone knows, rubbish _______ everywhere.
          A．need be thrownB．mustn’t be thrown
          C．can’t throwD．may throw
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          動(dòng)詞語(yǔ)態(tài)。。垃圾rubbish和throw為被動(dòng)關(guān)系，應(yīng)用被動(dòng)語(yǔ)態(tài)。排除C和D。句意為“每人都知道的，到處都禁止扔垃圾”。Mustn’t表禁止。故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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