好久不见！

Hǎo jiǔ bújiàn!

Long time no see!

太久没吃过中国菜了！

Tài jiǔ méi chī guò Zhōngguó cài le!

It's been too long since I had Chinese food!

我已经等了你好久了。

Wǒ yǐjīng děng le nǐ hǎo jiǔ le.

I've already waited for you for a long time.