YOU SAID:

well, why don't you do it then

INTO JAPANESE

じゃあ、やってみませんか

BACK INTO ENGLISH

Then why don't you try it?

INTO JAPANESE

どうして努力しない?

BACK INTO ENGLISH

Why don't you try it?

INTO JAPANESE

どうして努力しない?

BACK INTO ENGLISH

Why don't you try it?