That question should have been asked a months ago,为什么不是had b

That question should have been asked a months ago,为什么不是had b 分析It’s curious that he should have asked such a question should have been booked a while ago翻译 Have you ever been to Shanghai?-Yes,I_there a few months ago we should have had one long ago should have been有should had been吗 A.have come B.had come C.have been i have a nice watch,i have had it_____2 months A. for B.sinc 英语 even if it had been raining ,we should have had a party y he said that he had been to Canada a few years ago这个句子正确吗? 3.If he had asked me,I ( ) him.(本题分数：2 分.) A、 should have he If he had asked me,I ( ) him.(本题分数：2 分.) A、 should have help