【单选题】In some cases, the thesis and plan of development appear in the same sentence in a well-written introductory paragraph. However, writers sometimes choose not to describe _________.
【单选题】In this chapter, some cases will be introduced to readers ______ people with strong determination achieve their goals by working extremely hard. [ ]
【单选题】The paper studies some ______ cases in which something somehow wrong leads to the miscommunication, so that English teachers may improve their teaching. [ ]