cross my heart (and hope to die)
成語所屬單字cross
cross my heart (and hope to die) — 慣用語
1. Used to emphasize that you are telling the truth or will keep a promise.
1.慣用語
釋義
發誓；保證
Used to emphasize that you are telling the truth or will keep a promise.
例句
I didn't take your book, cross my heart.
Cross my heart, I will finish the project by Friday.