单项选择题
A．works in a bank by himself B．lives in a bank and works by himself C．lives by himself and works in a bank D．lives in a bank by himself
A．Animals are very skillful at a circus. B．They are big and strong. C．Some animals arc as clever as human beings. D．Animals can be trained because they like to get something as a rewar
A．phoning B．asking C．wishing D．electing