I wasn't ---enough to tell her what happened to her brother.

I wasn't ---enough to tell her what happened to her brother. I don't know what happened to her. What can have happened to her What has happened\happens to her?选择 —What happened to her teeth? what happened to her mother =--- -----the ------ -----her mo I want to help her but I don't know what I can do to her what does lily tell her friends to We didn't know what had happened to her until we ( )the acci I still dont know what have /has happened to her at the part —I saw Alice in tears yesterday.What happened to her? What happened to her just now?改为同义句