"Nanxing!" I was startled when Jing Tian called my name. I stood up instinctively.
The word Teacher was already on the tip of my tongue. I forced it back and almost bit my tongue.
"Yes, sir!" I stammered. My face was flushed red. I didn't expect him for call me so suddenly! What a sneaky ambush!
"For my class, you'll be responsible to take the attendance. If you cheat on your friend's behalf, then you will be take their demerit. If you get 3 demerit from me, you will fail my class this semester!" Jing Tian's voice was always cold and clear.
I nodded hurriedly. "Yes, sir!"