— What’s wrong with you Eric? You look tired.— I to prepare for the final exam last nigh

问题补充：

— What’s wrong with you, Eric? You look tired.

— I to prepare for the final exam last night.

A. picked up

B. woke up

C. stayed up

D. put up

答案：

A. picked up

B. woke up

(答案→)C. stayed up

D. put up

解析：句意:-你怎么了，Eric？你看起来很累。-我昨天晚上熬夜为期末考试做准备。pick up 拾起，捡起；wake up 唤醒；stay up 熬夜，不睡觉；put up 张贴，搭建。根据句意可知选C。