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52.(      )

15. You may not watch TV (   ) you have finished your homework. 

• A、before
  
  

• B、until
  
  

• C、after
  
  

• D、while
  
  

36. Mr. Brown (   ) . 

• A、works on his own in a bank
  
  

• B、 lives in a bank and works on his own
  
  

• C、lives by himself and works in a bank
  
  

• D、lives with his sister and works by himself