“You forgot to do your homework again?”

Xiao sighed. You beg him to lend you his notebook because you haven't do your homework yet.

Xiao thought for a while.. he didn't want to give you his homework but he also felt sorry to see you get punished later. So he sighed again and says..

“Instead of you copying my homework what if I teach you to do it?”

He said, smiling gently. Actually this is not what you expected, you thought Xiao would let you copy his homework.