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				44．A．while         B．since          C．until          D．a(chǎn)s			【查看更多】
			


		
     
    


		
    
		
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    I’ll go to visit my aunt in England _____ the summer
holidays start..
    


    A．while             B．since.             C．until             D．a(chǎn)s soon as
    


     
    

			
    
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    I tried to call you ________ I heard from him, but you were not in.
    

    [　　]
    


    

    

    A．since
    		


    B．while
    		


    C．until
    		


    D．as soon as
    		

    

    

    

			
    
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    I tried to call you ________ I heard from him, but you were not in.
    

    [　　]
    
    

    

    

    A．since
    		


    B．while
    		


    C．until
    		


    D．as soon as
    		

    

    

    

			
    
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    ________ my parents were watching TV, I was playing a new computer game．
    

    

    [　　]
    

    A．

    Since
    

    

    B．

    While
    

    

    C．

    Until
    

    

    D．

    As
    

    

    

			
    
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    I tried to call you ________ I heard from him, but you were not in．
    

    

    [　　]
    

    A．

    since
    

    

    B．

    while
    

    

    C．

    until
    

    

    D．

    as soon as
    

    

    

			
    
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