it is strange that he---without saying good-bye to us

it is strange that he---without saying good-bye to us 英语语法：It's strange that he ____ without saying good-bye to us strange that he _ without saying good-bye to us.A should hav He _____ without saying good-bye to them,for he always has g he lelf without —— good by to us . A. saying B. speaking C.t 1.I regret ___ (leaving\to leave)without saying good-bye las 1.It's strange that they___without saying goodbye to anybody It is strange that he should have gone away without telling 如何翻译：it is strange that he should have gone away without tel He left ______ (angry)without saying goodbye to us. Saying Good-bye to Cambridge Again It's too strange that they should have left without saying g