go i am absolutely convinced that...	go i tend to think that...	go in my opinion
go i am sure that	go i’d like to start with	go in short, she is extremely helpful
go i believe	go i'm not really sure what i think about that, but…	go in that case
go i can only guess that	go in addition	go i've got mixed views on the issue of
go i have mixed views about this issue	go in comparison with children, teenagers are	go i've never thought about it, but i could say that…
go i suppose that...	go in fact