Условие задания:

3 Б.
Complete these sentences with 'can' or 'be able to'.
  
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1.  I'm sorry I won't _________ come.
    
 
2.  Don't shout, I _________ hear you very well.
    
 
3.  I'm locked in! I _______ get out!
    
Источники:
s-english.ru