YOU SAID:
i hope we can finish before oleg comes back
INTO JAPANESE
私はオレグが戻ってくる前に終えることができることを願っています
BACK INTO ENGLISH
I hope I can finish before Oleg comes back
INTO JAPANESE
オレグが戻ってくる前に終わらせたい
BACK INTO ENGLISH
I want to finish before Oleg comes back
INTO JAPANESE
オレグが戻ってくる前に終わらせたい
BACK INTO ENGLISH
I want to finish before Oleg comes back
That didn't even make that much sense in English.