2 sentences for 正好 (zhèng​hǎo — just in time)

1. 你们俩来得正好，要吃早餐吗？

   nǐ​men liǎ lái​de zhèng​hǎo, yào chī zǎo​cān ma?

   Perfect timing, you two want some breakfast?

   Source: OpenSubtitles

2. 你来得正好，我们正要开始开会。

   nǐ lái de zhèng​hǎo, wǒ​men zhèng yào kāi​shǐ kāi​huì.

   You've come at the perfect time; we are just about to start the meeting.

   Source: Dong Chinese Dictionary