Question

【题目】—________ Mr. Green was very tired，he stayed up late to finish his work.

—How hard－working he is!

A. If B. Unless C. Although D. Because

Answer 1

【答案】C

【解析】句意：——尽管格林先生非常累，但是他为了完成工作，熬夜到很晚。——他工作多么辛苦啊！if如果；unless除非；although尽管；because因为；结合句意，前半句表示他非常累，后半句表示他熬夜到很晚，前后表示让步关系，故用连词although，故选C。