Definition: to promise to do something Level: C2
政府承诺改善公共交通系统。
The government ___undertook ___to improve the public transportation system.
她已承诺监督整个翻修过程。
She has ___undertaken ___to oversee the entire renovation process.
我们承诺在商定的时间内交付结果。
We ___undertake ___to deliver the results within the agreed timeframe.
