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2 ปี 11 เดือนAge: 12-14
Level: 7
Language: Sinhalese, Sinhala
(si)
ไอดี: 1116919
24/06/2021
Country code: LK
Country: Sri Lanka
Main content: Examples of operating system (1416127)
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![Operating system Operating system](/sites/default/files/styles/worksheet/public/def_files/2021/6/24/106241233012094826/106241233012094826001.jpg?itok=hQ0obXW3)