คณะกรรมการ, โรงเรียน, นิ้วหัวแม่มือ, บวก, ยิ้ม, ความปิติยินดี, ความยินยอม, สูง, กระดานดำ, ว่างเปล่า, เขียน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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