Условие задания:

6 Б.
Complete the sentences using the answers or the verbs in the brackets. You have to decide where to use the future perfect or the future perfect continuous.
1.   by Tuesday?
    Yes, she'll have returned by Tuesday.
2.  How many years  this year?
    They'll have been married for 10 years.
3.  When will you send the e-mail?  
    We  it by Thursday. (deliver)
4.  Can I have a look at your photos next time?  
    No, I'm sorry. I  them by then. (not develop)