David goes to school very early in the morning,and comes bac

David goes to school very early in the morning,and comes back home very late in the evening.One day,David has something important to do and he wants to go home earlier than before,but his teacher asks him to finish his homework before going home."That will be too late for me."David thinks "l must…"
Just then,David sees his teacher closing his eyes and taking a nap in his own chair,so he goes over to the teacher with his toes and colors the teacher's glasses black with a brush carefully.Then he goes back to his seat quickly and says,"Mr Brown,it's dark now and it is time to go home now."
Mr Brown opens his eyes and says,"Oh,yes,it's so dark.Please go home." David runs out of the classroom as quickly as he can.