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				29．Even the top  students in our class    work  out the maths problem , so it    be  difficult．A．can ' t, must   B．can ' t, need          C．can, may         D．mustn't, can			【查看更多】
			


		
     
    


		
    
		
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    Even the top students in our class        work out the maths problem , so it        be difficult． 
      
    A．can ' t, must      B．can ' t, need                  C．can, may                D．mustn't, can
    

			
    
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