试题题干
John is supposed（）his term paper last week, but he hasn't finished it yet.
参考答案
正确答案：
试题解析
本题考查固定用法be supposed to do=should do，表应该做某事。“John”和“hand in his term paper”应该是主动关系，所以排除BD选项。根据“last week”可知，John本应该上周就把学期论文交上，但他到现在还没有完成，所以这里应该是should have done sth.：本应该做某事。故选C。