问题
选择题
—You don’t look well． Are you ill?
—No, the mid-term exam is coming and I reading until midnight．
A．stayed up
B．am staying up
C．have stayed up
D．will stay up
答案
答案：A
题目分析：句意：--你看起来脸色不好，你生病了吗？--没有，期中考试快到了我熬夜看书学习到深夜。根据这个对话可以看出熬夜带来的结果是脸色不好，所以熬夜肯定已经发生了。故选A。
点评：本题难度适中。动词时态也是高中阶段的重难点之一，考生必须会区分它们的不同用法进而对动词的时态做出正确的判断。
即学即练：---Has Li Lei finished his work today?
--- I have no idea, but he ______ it when I saw him this morning.
A. had done B. would do C. was doing D. did
解析：C。句意：：--今天李雷完成他的工作了吗？----我不知道，但我今早看到他时他在工作。根据句意及时间状语when I saw him this morning可知用过去进行时。