I’m surprised that he in the exam.
A. should fail
B. would have failed
C. may have failed
D. should have failed
网友回答
A. should fail
B. would have failed
C. may have failed
(答案→)D. should have failed
解析：should可用于表示惊奇、感叹、不满等感情色彩的句子，如指过去的动作，则要用should have done sth. Would 和 may通常不带感情色彩。