Today, I need to see a doctor and thought coming back to study late.
วันนี้ฉันมีนัดพบหมอฟัน ฉันคิดว่าจะกลับมาเรียนไม่ทันเวลา
Today I had a dentist appointment. I ask permission to leave one day too.
Today I have a dentist appointment. I think it will not come back on time.