お前に決めたを英語でなんと言うか？

元ビートルズの故ジョージ・ハリスンの曲に Got my mind set on you （セット・オン・ユー）があります。I got my mind set on you. で「お前に決めた」の意味です。大切な部分は got mind set on, have heart set on です。0:06 I got my mind set on you.

George Harrison-Got my mind set on you
https://www.youtube.com/watch?v=l1ANs4j5EEg  0:50 they've got their hearts set on a Mac. この人たちはマック一筋です。
MacBooks Reviewed: Which One Is Right For You?
https://www.youtube.com/watch?v=MF7L9MmJQ1U  0;43 he's really got his heart set on a salad. うちの親父はサラダ一途の人間なんだよ。
RMR: Scotiabank

練習問題解答
a-5024 has its eyes set on
a-6343 had her heart set on
a-8442 has its eyes set on
b-4774 set his eyes on