Look! That fellow is too sleepy to work. He up reading until midnight.
A. mustn’t stay
B. mustn’t have stayed
C. ought not to stay
D. should not have stayed
网友回答
A. mustn’t stay
B. mustn’t have stayed
C. ought not to stay
(答案→)D. should not have stayed
解析：考查情态动词+have done的用法。句意“看！那个家伙太困了以至于不能好好工作。他本不应该熬夜看书。”shouldn’t have done“本不应该做却做了某事”。故选D。