Условие задания:

6 Б.
Read the sentences and choose since or for 
  
1. I've lived in Vienna ..... 3 years.
    
 
2. She has been on holiday ..... last Monday. 
    
 
3. I haven't phoned home ..... Christmas.
   
 
4. I have studied non-stop ..... 9.15.
 
  
 
5. David has known Mary ..... 1996.
   
 
6. He's worked in this department ..... three months.
   
Источники:
 

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