Lesson 21
Video and text 
Listening and speaking 
Vocabulary 
Grammar exercises 
  
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 Question: You are in Britain. Ask the friend who is talking to 
              you on the phone to post the letter to Britain. Otherwise you will 
              not talk to him again. 
 
 
   Hint 
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Hint 2    
 
Answer     
 
Comments   
 
Index 
 
 
 
 
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