Change hair color

Today, I had my hair dyed black. There was no reason to dye my hair, but I wanted to change my image. I had my hair dyed blown when I was freshman, and I wanted to return my hair color to original color.
I was a little hesitated to change the color.

After school, I went to a cram school and taught two students. I enjoyed it because I like to talk with them.
But there are something that I bother.
One student was sleeping during the class. He looked tired and very sleepy. I must wake him up, but I hesitated it... But I think I must wake him up.
See you.