49. Why do boys and girls not like their holidays?

• A、They cannot play games with their friends. 
  
  

• B、They have much homework to do.
  
  

• C、They must stay at home for study. 
  
  

• D、Their parents don't give them pocket money.
  
  

11. Look out! Don't get too close to the house (   ) roof is under repair. 

• A、whose
  
  

• B、which
  
  

• C、of which
  
  

• D、that
  
  

54. (     )