I love I can visit various countries through my job.

= I love that I can visit various countries through my job.

Because I can visit the village where the projects are going on, meet people all over the world, which makes me learn life- lessons from them.

= It's because I can visit the village where the projects are going on and meet people all over the world, which makes me learn life lessons from them.

Hi, Ji Eun! Thank's for answering the homework! Great job on the homework! Those color red are the minimal corrections that I noticed, but you don't have to worry because your answer is correct! :) 

See you on Monday! Have a nice weekends. ^^