Poso kairo exeis na... Does it mean, "how long since ".. CORRECT!
Poso kairo exeis na pas sto spiti sou... How long since you went home. CORRECT!
Poso kairo exeis na deis ton papa sou... How long since you saw your dad. CORRECT!
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.