I apologize for not getting back to you sooner,...

来源: 于 2021-05-06 17:31:26 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Here are my suggestions:

..., but, regrettably, I have yet to fulfill my promise.

..., but, regrettably, I have yet to keep my word.

photography masterpiece(s)