I am sorry I didn't keep my promise .很抱歉,我没有遵守诺言.除了I am sorry I didn't keep my promise .还可以怎么表达.

I am sorry I didn't keep my promise .很抱歉,我没有遵守诺言.除了I am sorry I didn't keep my promise .还可以怎么表达.
I am sorry I didn't keep my promise .
很抱歉,我没有遵守诺言.除了I am sorry I didn't keep my promise .
还可以怎么表达.

I am sorry I didn't keep my promise .很抱歉,我没有遵守诺言.除了I am sorry I didn't keep my promise .还可以怎么表达.
I am sorry for not having kept my promise .
Sorry for breaking my promise .