It's Thursday so tonight they ______ (go) to the cinema as usual.  >>sth inevitable<<

Before 2 p.m. on Friday we _____ (finish) our assignments and handed them in to our teacher.  >>completed action<<

I can't believe that by the time we arrive I _____ (sit) on this plane for 12 hours!  >>duration<<

At the end of this year I _____ (belong) to this club longer than any other member.  >>a STATE that will have lasted a certain amount of time<<

We ____ (known) each other for five years next July.  >>a STATE that will have lasted a certain amount of time<<

What do you think you _____ (do) in 20 years?   >>progress<<

I think it's an irreversible trend and by the end of this century more and more people _____ (live) alone.  >>sth inevitable<<

By the time you get home from school, dad _____ (leave) for the airport.  >>completed action<<

It's amazing to think that next year my grandparents ______ (live) in Seville for over 40 years.  >>duration<<