Now who'd of ever thought that是什么意思

原句是Now who'd of ever thought that We'd both be here tonight.
我不明白who'd of 是什么意思，是who would of的缩写吗？如果是的话是什么意思呢，是一个固定短语吗？would在这里是什么用法呢？

希望大家帮帮忙，谢谢

Now who'd of ever thought that是什么意思 _____turn is it now?A.Who's B.Whose C.Who D.Whom 应该选那个？？？ I Wonder Who's Kissing Her Now 歌词翻译 Who's the man talked with you just now? 填that 还是who who'd like to help me 求歌曲《I Wonder Who's Kissing Her Now》的翻译 who is in the meeting hall now? ---It's seven o'clock already.Mary____be home by now. It's six o'clock.I __(get)up now. He said he ____back before six o'clock,but he ___by now.