【正确答案】taken care of

【答案解析】原文： Some of you have asked me why we need to write a leave letter, Well, sometimes you may need be absent from your work for several days. In that case, it is especially important for you to write a leave letter. It is also important to write it as early as possible so that your employer can be prepared for your leave. You should be as specific as you can about the dates. When are you going to be absent from work and for how many days? Another point is you should be honest with your boss about why you need time off. It’ s a good idea for you to discuss how your work would be taken care of when you’re absent. In your letter, you may include details about how you think your work will be taken care of.题干问在请假条里，你应该写上哪些细节。根据原文“In your letter， you may include details about how you think your work will be taken care of.”可知,你应该如实告诉老板你为什么需要请假。所以此处应填taken care of。