[質問に答えて] Is his name Kishita? (No + 否定短縮形)
No, it's not / No, it isn't. It's Kishida. (it = his name)
[自分のこと+短縮形で答えて] Where are you from?
I'm from ___________.
[He is] a teacher. ([ ]を短縮形に変える)
He's a teacher.