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By the time I'm 50, I......................(finish) paying my mortgage.
will have finished
By the time Mozart was 5 years old, he .............................(already/write) several pieces of music.
had already written
I ...........................(not see) Dora in ages. She must have changed a lot!
haven't seen
When I hit 50, I ............................... (travel) through all Europe and Asia.
will have travelled
Nowadays, people ...............................(invented) autonomous cars, but .....................(not understand) that driving while texting is plain stupid.
have invented/haven't understood
Before she met the love of her life, Cassie ................(be married) four times.
had already been married
....................(see) George today? When I got home, he ........................(already/leave)!
have you seen/ he had already left
By 2100, scientists ............................(invent) a way to heal human teeth (too bad I won't probably be around). Maybe they ....................(find) a way for people to live 150 years (then I'll be around, with perfect teeth)
will have invented/will have found
By 1989, people in Romania .......................(become) used to living with very little resources.
had become
By 20th July, all the students in this English class ............................(graduate) the English course with flying colours.
will have graduated
By this time next year, the whole Covid situation.......................(become) a strange memory.
will have become
I .........................(see) many of his movies, but I .................................(never/understand) why Johnny Depp is considered a good actor.
have seen/have never understood
Until this age, I ...................................(drink) goat's milk. I find the thought of it appalling.
I have never drunk
