I don't have everyone's speech but this is just what I could find and translate.
Tanaka's speech
“I came in as a yankee and as such, thought of everyone as rivals”
“But seeing such an increase in female fans, I thought I would work hard for all of you.”
“My hopes and dreams were filled with worry, I even stopped updating my blog.”
“Please let me apologise just this one time. I’m so sorry. From here on out, even if it’s hard, I hope you continue to support me”
kudou said “I will support Lovender. I’ll buy a lot of your goods, but you just have my word on that.”
Satou said “Since you were always smiling, Tanaka-san, there was no way you were sad (?). I’ll end up saying to many things wrong to tanatasan right now. It’d take me 6 hours to say everything. I wrote an email to you talking about how you graduated yesterday. then I realised I made a huge typo!”
Ishida “We had a filming session back when I first joined. I was really scared but you taught me the importance of greetings. *first impressions I think it might be*”
Tanaka”We should co-ordinate our clothes, Ishida”
Iikubo “I think it’s the charisma speaking but we should go see a museum sometime.” *or perhaps theatre??*
Tanaka “I’m a bit hesitant about the museum. I’m glad we were able to talk in private though!”
Zukki said “Even a year after I had joined you would stil give me advice! Singing in group lines always seemed to give the all-round sound a nice feeling. And so I ended up liking more and more songs”
Tanaka said “You have a really strong voice, so you should try to have as much fun as you can wihle singing live”
Riho said “Morning musume has truly become great.”
Tanaka “you’re dancing really gives off a nice feeling, keep trying your best with it.”
credit other forum