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          All the students in my class can’t ______ the math problem. It’s too difficult for us.
          A. work on      B. work out        C. work for
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：我們班級所有的學(xué)生都不能計算出這道數(shù)學(xué)題，它對于我們來說太難了。A. work on從事于…… B. work out 計算出；C. work for為……而工作，根據(jù) It’s too difficult for us.可知不能計算出這道數(shù)學(xué)題。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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