—You look tired Jack What's wrong with you?—Oh 1 worked quite late last night． Nothing

问题补充：

—You look tired, Jack． Whats wrong with you?

—Oh, 1 worked quite late last night． Nothing wrong with me,．

A. although

B. though

C. yet

D. still

答案：

A. although

(答案→)B. though

C. yet

D. still

解析：句意：--杰克，你看起来很疲劳。你怎么了？--昨晚我工作很晚，可是我没有什么问题。Though即可以做连词“虽然”，也可以做副词“可是，然而”，放在句中和句末，although连词“虽然”，yet 副词：“但是”，不能放在句末，也可以做连词：然而，但是，still“仍然”，所以选B。