to  keep  a promise
keep
ki:p
kip
a
ə
ē
promise
prɒmɪs
promis
[keep] {one's} promise

英語での「 keep a promise」の定義と意味

to keep a promise
01

to fulfill or uphold a commitment or agreement that one has made to someone 

コロケーション
I always strive to keep my promises to my friends. 
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