Don't worry. I promise to do just as you say.

别担心, 我照你说的做就是了.

《现代汉英综合大词典》

He made a solemn promise to do better.

他郑重保证要做得更好.

辞典例句

If you promise to do something, you must not break your promise.

如果你答应做某事, 就一定不要失言.

互联网

Maximum to meet customer demand, customers must promise to do so.

最大限度的满足客户的需求, 答应客户的一定办到.

互联网

He gave his solemn promise to do better.

他庄重地保证把事情办好.

互联网