YOU SAID:

it will, I am sure, be an enormous hit.

INTO JAPANESE

それは、巨大なヒットになる私は確信します。

BACK INTO ENGLISH

It is going to be a huge hit I'm convinced.

INTO JAPANESE

それは確信している巨大なヒットになるつもりです。

BACK INTO ENGLISH

It is going to become a huge hit for sure.

INTO JAPANESE

それは確かに巨大なヒットになるつもりです。

BACK INTO ENGLISH

It is going to become a huge hit for sure.