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          — Have you solved your problem?
          — I’ve kept on thinking about that matter__________, but I have had no idea.
          A．at timesB．some time
          C．at a timeD．all the time
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：—你解決了你的問題了嗎？—我一直在考慮這個問題，但我還沒有主意。A. at times有時； B. some time一段時間； C. at a time一次； D. all the time總是，一直，根據(jù)句意此題選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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