（我们）欢迎了新（来的）经理，她管理采购。服务员和司机都要听她的话。 We welcomed the new manager, and she takes charge of the purchasing. Both the attendant and the driver need to listen to her. 警察理了发，(所以)他的头发很短。 The police had a haircut. So his hair is quite short now. 演员（参加）演出，演出很精彩，观众（们）的鼓掌（很）热烈。 The actor joined a show. And the show was very excellent, these audiences clapped warmly. 顾客不喜欢售货员，他（想）自己（做）选择。 The customer didn´t like the salesman, he wanted to make choice by himself. 护士学习（了）很多（知识），（因为）她想当医生。 The nurse has studied a lot, because she wants to be a doctor. 校长很喜欢写书，她想当（一位）有名的作家。 The headmaster likes writing books, she wants to be a famous writer. （虽然）这位作者很著名，(但是)我不想看她的小说。 Although this author is quite famous, I still don´t want to read her novel. 老师跟导游去爬山，（所以）今天不用上课了。 The teacher went climbing with a guide, so no classes today. 翻译不知道（这篇）文章的重点。 The translator doesn´t know the key-point of this article. 记者在杂志上（发表了）新闻。 The journalist published new news in the magazine. You did a good job! the word in the () is my correction. Because some of these sentences might have a another meaning, and perhaps I didn't get it, so I write my understanding in English, then you can check if I got what you wanted to express :)