The student wrote a letter of thanks to ______ had helped th

The student wrote a letter of thanks to ______ had helped th we wrote a letter of thanks to--had helped us 解释一下为什么填whoeve 分句子的主语和谓语we wrote a letter of thanks to whoever had helped u we wrote a letter to ____ had helped us.A whoever B whomever The old man wrote a letter to the hospital,____ his thanks . they wrote a letter of thanks,which we all felt --the highes they wrote a letter of thanks,which we all felt - i wrote a letter to the car dealer,what had happened to my n I wrote a letter to the car dealer ,____what had happened to 翻译 He had never helped anything to have a happy ending of th He wrote a letter to the king____ 翻译：I had wrote a letter before I went to the home