问题 选择题
   James was sleepy, he stayed up late to finish his project.
A.AsB.Since
C.UnlessD.Although
答案

D

考查状语从句。句意: 尽管James很困, 但是他熬夜完成了项目。although引导让步状语从句, “尽管”。as也可以引导让步状语从句, 但是必须倒装。

阅读理解与欣赏
单项选择题 A2型题