YOU SAID:

It's impossible to know until he emerges from his cocoon.

INTO JAPANESE

彼が繭から出てくるまでそれを知ることは不可能です。

BACK INTO ENGLISH

It is impossible to know until he comes out of the cocoon.

INTO JAPANESE

繭から出てくるまでそれを知ることは不可能だ。

BACK INTO ENGLISH

It's impossible to know until you emerge from the cocoon.

INTO JAPANESE

繭から出るまでそれを知ることは不可能です。

BACK INTO ENGLISH

It's impossible to know until you emerge from the cocoon.