Mrs. Smith treated her little dog quite ______.

A．the butcher found himself cheated by the smart animal
B．the dog was clever enough to write on the paper
C．the dog dared not go to the butcher's any more
D．the butcher was told not to give any meat to the dog

A．when he found the words on the paper were not very clear
B．because he happened to have sold out all the meat in his shop
C．before he felt sure that the words were really written by Mrs. Smith
D．until he was paid enough by Mrs. Smith