Answer:
Are we talking about present, future or past? 
present- debes 
future- deberías 
past- debías
 
        
                    
             
        
        
        
casarse con
Es la respuesta con más lógica 
 
        
                    
             
        
        
        
Did you buy the expensive shoes?
hope this helped
        
                    
             
        
        
        
I believe the answer should be “Nació Cristina” :) I hope
        
                    
             
        
        
        
Some of our old magazines. 
That is how it would be translated into English. But if you want a direct translation, instead of how you would actually say it in English it would be: Some magazines of ours.
Your teacher is looking for the first one though.