单项选择(每题1分)
—Look, John’s fallen asleep at work!
—Oh, he must have _____ late last night.
A. waken up B. put up C. taken up D. stayed up
单项选择(每题1分)
—Look, John’s fallen asleep at work!
—Oh, he must have _____ late last night.
A. waken up B. put up C. taken up D. stayed up
D
略