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37. What was everyone told to do in a"whisper test"?

• A、Have his hearing tested. 
  
  

• B、Stand with both his sides towards the teacher. 
  
  

• C、Shut both his ears with fingers.
  
  

• D、Listen to the teacher with one ear only. 
  
  

55.(     ) 

10. —I usually travel by train. 

—Why not (   ) by plane for a change?

• A、to try going 
  
  

• B、trying to go
  
  

• C、to try and go
  
  

• D、try going