亚洲人成影院在线播放高清|久久精品视频免费播放国产|日本亂倫近親相姦在线播放|国产九九免费观看思思

    • 

  • 

    <td id="rjvax"><strong id="rjvax"></strong></td>
    


    
	
    
		
	
    
	
    
		
    
			
		
    
		
    
	
    

    



    

    

    

	
    
	

    

    
	
    
				
    

			
				 ―When did you become a volunteer?  ―Two years ago. I                this group since then.  A. have joined in   B. have joined to  C. have been in   D. have been to			【查看更多】
			


		
     
    


		
    
		
    題目列表(包括答案和解析)
    

		
		
    

    


    
	
    				
    
									
    —When did you become a volunteer? 
    —Two years ago. I _______ this group since then. 
    

    [     ]
    A. have joined in 
    B. have joined to 
    C. have been in 
    D. have been to 
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    — When did you become a volunteer?
    — Two years ago. I _____this group since then.
    

    [     ]
    A. have joined in
     B. have taken part in
     C. have been in
     D. have been to 
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    — When did you become a volunteer?
    — Two years ago. I _____ this group since then. 
    

    [     ]
    A. joined 
    B. have joined 
    C. have been in 
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    --When
did you become a volunteer for the elderly?
    


    --
Two years ago. I        this group
since then.
    




    
 
    
  
  
    A.
  joined
    
      		
  
  
    B.
  took part in
    
      		
  
  
    C.
  have joined
    
      		
  
  
    D.
  have been in
    
      		
 
    

    




     
    


     
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    --When did you become a volunteer for the
elderly?
    


    -- Two years ago. I ______ this group since
then.
    


    
 
    
  
  
    A．joined
    
      		
  
  
    B．took part in
    
      		
  
  
    C．have joined
    
      		
  
  
    D．have been in
    
      		
 
    

    


     
    

			
    
				查看答案和解析>>
			
    
		
    
						
    
				
    
	
    
	
    
		
    


    同步練習(xí)冊(cè)答案