这条裤子大小正合适，你穿起来很好看。

Zhè tiáo kùzi dàxiǎo zhèng héshì, nǐ chuān qǐlái hěn hǎokàn.

These pants are just the right size; they look great on you.

我们一起合作完成这个项目吧。

Wǒmen yìqǐ hézuò wánchéng zhè gè xiàngmù ba.

Let’s work together to finish this project.

这条裤子很合适，你可以试试。

Zhè tiáo kùzi hěn héshì, nǐ kěyǐ shìshi.

These pants are very suitable; you can try them on.