Question

It is strange that she---in the last exam A, should have failed B.should fail 选哪个

Answer 1

答案：B
给你翻译一下
如果选A，则是It is strange that she should have failed in the last exam ，翻译为：奇怪的是，她应该在最后的考试失败
如果选B，则是It is strange that she should fail in the last exam ，翻译为：奇怪的是，她在过去的考试失败

Answer 2

选B，should 在这里表示竟然，含有吃惊之意。A should have done 表示本应该做某事而未做

Answer 3

B.should fail （strange后用虚拟语气）