I want to be very careful to talk only about ____we've formally testedA、which B、that C、what D、whether为什么不能选A呢,不是“我们tested的那个”吗,老师说是定语从句,什么是定语从句啊,那A是什么啊

I want to be happy very much. I want to be doctor very much.改为感叹句___ I want to be a doctor. I want to be I want to be I like music very much and I want to be a m_______填单词 I want to go to Pairs very i want to be with I WANT TO BE WITH i want to go be I Want To Be 歌词 I WANT TO BE BEAUTIFUL i want to be the I want to be your I'm very bored,I don't know that I want to do,I think I'll be silly. I have had a dream since my boyhood.I want very much to be a doctor.I want to be a doctor because快,明天急用些 Do not want to be lost,I was very sad,you know? I like football very much .I want ( ) a football player A:be B:am C:to be I want to talk with you very