NO one knows for sure,and making predictions is a risky busi

NO one knows for sure,and making predictions is a risky busi 英语 no one knows for sure, and making prediction no one but" wrong" way corrigan knows for sure翻译 making inference and predictions是什么意思 英语翻译（1）No one knows for sure when advertising first started. No one knows for sure when the first people arrived in ____ But no one knows for sure how much crude oil lies buried ben no one knows for sure what use can be made of the computer i It is no longer a secret.There is no one...knows that.我什么用bu one thing is for sure 英语翻译A is responsible for making sure that the insurance agai No one knows