YOU SAID:

Do you think this thing works

INTO JAPANESE

このことがうまくいくと思いますか？

BACK INTO ENGLISH

Do you think this will work?

INTO JAPANESE

うまく行くと思うか？

BACK INTO ENGLISH

You think this will work?

INTO JAPANESE

うまく行くと思うか？

BACK INTO ENGLISH

You think this will work?