Don 't make promises you can 't keep .

不要做出无法兑现的承诺。

The government promises to improve mobility in time for the world cup .

巴西政府承诺要赶在世界杯开幕前及时改善公共交通系统。

In a chaotic world , promises matter .

承诺在一个混乱的世界中很重要。

Why did elected officials make those promises ?

民选官员们为什么要做出这些承诺？

The government promises to go further .

巴西政府承诺做进一步努力。