It is simple enough to say that since books have classes fiction, biography, poetry，we should separate them and take from each what it right that each should give us.书既然有小说、传记、诗歌之分，就应区别对待，从各类书中取其应该给予我们的东西.()

律师接受委托后，无正当理由不得拒绝履行协议的职责，不得无故拒绝辩护或代理。 () 点击查看答案

Every so often ,she spends a weekend in London.() 点击查看答案