mantenne la sua promessa

kept his promise

→ mantenere
phrase Uncommon #20,197
kept his promise Also used for 'kept her promise' depending on context. It is the past tense of 'mantenere la promessa' and can refer to anyone's promise.
IT: Mary mantenne la sua promessa e tornò a casa presto.
EN: Mary kept her promise and came home early.

Roosevelt mantenne la sua promessa.

Roosevelt kept his promise.

Mary mantenne la sua promessa.

Mary kept her promise.

Lei mantenne la sua promessa.

She kept her promise.

Mantenne la sua promessa.

He kept his promise.