assignment essays(小论文，听写答案)
term paper(最近考点：2014年6月，配合词汇：grade 打分)
thesis(毕业论文,六级考点) composition 作文
textbook教科书/reference book参考书/ assigned books 指定书目
搭配作业的一些常见表达：
be through with sth 结束，完成(四级四次考到，最新考点2014年12月)
due 到期(多次考点)
You've known for months that the report is due today.
have sb's hands full with sth=be up to one’s neck in sth
忙于做某事(两次考到)
narrow down the topic 细化题目/话题(两次考到)
