welcome home
well, this matter was the same with me
as for me i chose the topic of " the british and the american people in expressing their feelings"
it was an interesting topic and the teacher appreciated that
besides, i participated in a play with my colleagues
it's funny and good for your speaking skill
just try to break the barrier and go
everything will come smoothly
and believe me the best things come spontaneously
give it a shot
hoping that allah help you