の努力はすべて

all of …'s efforts

→ の
phrase Rare #34,342
all of …'s efforts The phrase follows the person or thing whose efforts are being described.
JA: 私の努力はすべて報われた。
EN: All of my efforts paid off.

我々の努力はすべて失敗に終わった。

All our efforts ended in failure.

我々の努力はすべてむだだった。

All our efforts were in vain.

彼の努力はすべて水の泡になってしまったようだ。

It seems that all his efforts have gone to waste.