should he fail in this esam,he would very sad?I do not this word is mean

i am surprise that he ( ) in the exam,为什么不用should fail 而用 should have failed should he fail in this esam,he would very sad?I do not this word is mean he ____the test again,in which case ,his mother will be very disappointedA might fail B must have been C should fail D could have fail 为什么选A,which case If he should fail,he would kill himself.为什么用should ,不是should用于第一人称吗? he studied hard ONLY to fail in the exam 意思? / might fail in the exam worried him ; a :that he He fail to catch the train.He fail to lift the rock in spite of all his exertion.请问这两句话fail为何不加s? 用所给单词替换句子中词1.Its raining hard.But I think we should go out.(however)2.He couldnt arrive in time.(fail)3.Policeman are helping to look for the lost child.(police) It is strange that she---in the last exam A,should have failed B.should fail 选哪个 he worked hard but he still _____ in the final exam.填fail还是failed? fail和fail in 有什么区别? fail in的近义词 We should perform a_____ in class.根据句意和首字母完成单词.Are you a___ all night?You seem s___.He felt s___ to see his wife in the stange city.I p___ him yester afternoon,but he was out.If he is not r___,he may fail to pass the test.To b You think that he will fail in the exam,____?反意疑问句是什么? / might fail in the exam worried him.a:that he ; 这句话怎么讲,句型是什么? He was surprised to fail in the math exam.(改为同义句） On the whole,he was a ＿（fail）in his life He was _____ on january 27th ,1756,in Austria.