YOU SAID:

When we are done, there will be nobody left in the department.

INTO JAPANESE

我々 が終了したら、教室に残って誰もがなります。

BACK INTO ENGLISH

After we have left in the classroom, everyone will be.

INTO JAPANESE

教室に残っている、誰もなります。

BACK INTO ENGLISH

Anyone who remains in the classroom.

INTO JAPANESE

教室に残っている誰か.

BACK INTO ENGLISH

Anyone who remains in the classroom.