YOU SAID:

Will you have taken serious action by the time I have returned?

INTO JAPANESE

戻ったので時間によって深刻な行動をしているか。

BACK INTO ENGLISH

By the time have since I got serious action?

INTO JAPANESE

時間以来私持っている深刻な行動?

BACK INTO ENGLISH

Since the time I got serious action?

INTO JAPANESE

時間以来、私は深刻なアクションを得たか。

BACK INTO ENGLISH

Since the time I got serious action?