Условие задания:

4 Б.
Choose the future perfect or the future perfect continuous.
  
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1.  By the time you arrive for lunch, we _____ our kids to bed.
    
 
 
2.  Since you’ll be arriving late for the meeting, we _____ most of things by the time you come.
    
 
3.  Next month, Anthony _____ Spanish at this school for 30 years.
    
 
4.  By the time she retires next month, James _____ 5 years as a receptionist in the hotel.