YOU SAID:

You could have done so much more if you only had time

INTO JAPANESE

時間があればもっとたくさんのことができただろう

BACK INTO ENGLISH

I could have done more if I had time

INTO JAPANESE

時間があればもっとできたはずです

BACK INTO ENGLISH

I should have done more if I had time

INTO JAPANESE

時間があればもっとやるべきだった

BACK INTO ENGLISH

I should have done more if I had time