✔ 最佳答案
Yesterday, I got up at 7 o`clock. [Then,] I washed my face and [rinsed my mouth]. [After] having my breakfast, I put on my school uniform and shoes. I [left] home at 8 o`clock. [Walking for a while], I got to bus stop and waited for school bus. [Five] minutes later, the bus arrived at the bus stop and I got on the bus. [Fifteen] minutes later. The bus got to the school and I got [off] the bus. As soon as I arrived at the classroom, the school alarm [started] to ring. [And] then I [started] to study.
Don't use too many commas... It's not Chinese composition.