单项选择题
A．can only use their right bands B．can only use their left hands C．can't use their hands at all D．can use either hand to catch things
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
A．might do it much harm B．could do it much good C．would give the butcher some meat D．was worth many pounds