YOU SAID:

i bet you a fiver I win this game

INTO JAPANESE

私はあなたに私がこのゲームに勝つと確信しています

BACK INTO ENGLISH

I'm sure to you I will win this game

INTO JAPANESE

私はあなたにこのゲームに勝つと確信しています

BACK INTO ENGLISH

I'm sure you'll win this game

INTO JAPANESE

きっとこの試合に勝てると思うよ

BACK INTO ENGLISH

I'm sure we'll win this game.

INTO JAPANESE

きっとこの試合に勝てると思います。

BACK INTO ENGLISH

I'm sure we can win this game.

INTO JAPANESE

きっとこの試合に勝てると思います。

BACK INTO ENGLISH

I'm sure we can win this game.