It would be great if I could travel across my country. Traveling may cost a fortune and you will earn lots of things from it. If only just I could, I would like to go to North Korea and help those poor peaple myself. It would really be grateful if I could save even just one because of me.

Note:
*If only I could.. - You've already used only, no need to use just
*It would really be..

Sarah, thank you for submitting your homework! You made few errors! :) Enjoy your weekend! See you on Tuesday!