履行诺言

• deliver the goods
• carry out a promise
• keep to sth.

例句

1. 他说要来帮忙，但他没有履行诺言。
   He said he would come to help, but he fell down on his promise.
2. 你必须履行诺言。
   You must fulfill your promise.
3. 履行诺言。
   Respect promise.