单项选择题
A．Margaret Jones’sister. B．Margaret Jones’ cousin. C．Margaret Jones’ friend. D．Margaret Jones.
A．Two hours. B．Five hours. C．Three hours. D．Seven hours.
A．it, like many other dogs, always tried to please its owner B．it, unlike many other dogs, always wanted its master to please it C．it was more intelligent than many other dogs D．it was the most faithful dog of his friend's