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				 Ladies and gentlemen, please fasten  your seat belts. The plane       .A．takes offB．is taking offC．has taken offD．took off			【查看更多】
			


		
           
          


		
          
		
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          Ladies and gentlemen, please fasten your seat belts .The plane _____ .
          A．takes offB．is taking offC．has taken offD．took off
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Ladies and gentlemen, please fasten your seat belts. The plane __________.
          A．takes offB．is taking off
          C．has taken offD．took off
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Ladies and gentlemen, please fasten your seat belts. The plane _____.
          A．takes offB．has taken offC．took offD．is taking off.
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Ladies and gentlemen, please fasten your seat belts. The plane__________.
          A．takes offB．is taking offC．has taken offD．took off
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Ladies and gentlemen,please fasten your seat belts,the plane______.
          A．takes offB．is taking offC．is going to take off D．is to take off
          

			
          
				查看答案和解析>>
			
          
		
          
						
          
				
          
	
          
	
          
		
          


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