"Hello, everyone. Did you have a good time during your Christmas vacation?"

The next morning, all the children went back to class five in high spirits. While in class, Lu Go clapped her hands and started with that question and a smile.

"Yes." All the students replied clearly and tenderly, which was also a kind of auditory enjoyment.

"Did you forget the task assigned by your teacher?" Lu Go asked again with a smile.

"No!"

"Yes!" ...