no one could __ failed to notice the fact that ///is a grave problem,这边是用has还是have为什么呢

no one could relace no one could help you but you no one could change my decision no one could do anything about it no one knows what will happen__ __ __(将来） No one could ever know me,no one could ever see me为什么用ever? No one could be fatter.No one could have been fatter.意思上有什么不同? no one could __ failed to notice the fact that ///is a grave problem,这边是用has还是have为什么呢 fail/pass one’s The teacher asked us so __ __ __ __no one could work it out My favorite color is red.__ color __ you __ __ No one __(know) that street. The shirt is too big .Would you mind giving me a smaller one Could you please __ __ __ __ __ __? No one will want to see actors __ (talk). No one could replace you in my heart No one could love me as much as you do. No one could replaced you in my heart/replaced是什么意思 He looked back but could see no one. __ __ no one comes to the party要是没人来参加聚会怎么办啊