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				38．A．improve         B．improving        C．improved        D．to improve			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          

          Your pronunciation needs ________.
          

          [　　]
          

          

          A．improve
          B．improving
          

          C．to improve
          D．improved
          

          

          

			
          
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          Students should do everything they can ________ their study.
            
          A．improve            B．to improve             C．improving               D．improved
          

			
          
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          I'll work hard ________ my English.
          

          [　　]
          


          

          

          A．improve
          		


          B．to improve
          		


          C．improving
          		


          D．improved
          		

          

          

          

			
          
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          —Why did you plant so many trees?
           — ______ the environment.
          A．Improve 
          B．To Improve 
          C．Improved 
          D．Improving
          

			
          
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          —Why did you plant so many trees?
          


          — ______ the environment.
          


          A．Improve 
          


          B．To Improve 
          


          C．Improved 
          


          D．Improving
          


           
          

			
          
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