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				    the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.  A. When  B. While  C. As   D. As if			【查看更多】
			


		
           
          


		
          
		
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          ________ the Internet is of great help, I don’t think it’s a good idea to spend too much   
            
          time on it.
            
          A. While        　    B. As      　                 C. Because　         D. If
          

			
          
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          ________ the Internet is of great help, I don’t think it’s a good idea to spend too much  time on it.
            
          A. While            　     B. As         　                      C. Because　            D. If
          

			
          
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             ______the Internet is of great help, I don’t think it’s a good idea to spend too much time on it. 
            
             A. If      B. While      C. Because     D. As
          

			
          
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             _____ the Internet is of great help. I don’t think it’s a good idea to spend too much time on it.
             A. If  B. While  C. Because  D. As 
          

			
          
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          ______the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
          A．IfB．AsC．BecauseD．While
          

			
          
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