私のは今日の仕事の日(Today's my work) 

今日、私は病院で仕事を中だっした。(Today, I worked in the hospital.) 

でも、楽しみだかった。(It was fun.) 

*仕事中だった means "during my work / while I was working" and the other thing/action is needed. 

*楽しみだった = I was looking forward to (something)

Good job! Please keep up. I hope this helps you.