YOU SAID:

They're all coming back for a couple of days.

INTO JAPANESE

彼らは全員数日間戻ってきます。

BACK INTO ENGLISH

They'll all be back for a few days.

INTO JAPANESE

彼らは全員数日間戻ってくるでしょう。

BACK INTO ENGLISH

They will all be back for a few days.

INTO JAPANESE

彼らは全員数日間戻ってくるでしょう。

BACK INTO ENGLISH

They will all be back for a few days.