You dyed the blackboard with it.
When you have too much homework, you will sweat profusely.
You use it to irrigate the seedlings.
Ruthless eraser
Wipe away your young face.
Snow white chalk
Outline your wrinkles.
A diligent teacher
Thank you for taking the trouble to teach us word for word.
A diligent teacher
Thank you for your painstaking dedication to us.
A diligent teacher
Thank you for correcting us when we are off track.
Angels thank God.
Because God gave it a pure heart.
We thank the teacher.
Because the teacher gave us the key to the ideal door.
Thanksgiving, our teacher.
Thank you for everything you have done for us.
Thanks to our teacher.