问题
选择题
---What’s wrong with you, Jack? 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
答案：C
题目分析：句意：你怎么了，杰克？你看起来很累。我昨晚熬夜准备期末考试。A 捡起；B 醒来；C 熬夜；D 举起；结合语境故选C。