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          My mother ___once a week.
          A．shopB．shopsC．to shopD．shopping
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          通過時間狀語once a week每周一次，可以判斷本句為一般現(xiàn)在時態(tài)。選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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