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20. --Must I turn in the homework tomorrow?

--No,______.

• A、you needn't
  
  

• B、you won't
  
  

• C、you can't
  
  

• D、 you don't
  
  

 54.

42. The phone case is shaped like a gun so that users can______.

• A、help improve the website
  
  

• B、play games of shooting
  
  

• C、hide their phones safely
  
  

• D、actually shoot someone