Here's to John and Fiona!
John and Fiona!

Come on! Hurry up!
OK, I'm coming!

OK, everyone. Time's up.
Oh no, I haven't finished.

We can't go on like this.
I know.

I'll pour your coffee. Say when.
That's fine. Thanks.

Here you are.
Thanks a lot.

Did you understand what he said?
Sort of.

here's to somebody/something

used when you are going to drink something to wish someone good luck, show your respect for them etc.

Here’s to the happy couple.
为这幸福的一对干杯。

hurry up

used to tell someone to do something more quickly

Hurry up! We’re late!

time's up

the amount of time allowed to do or complete something is over

Time is up on today's quiz — hand in your papers.

I know

use to agree with somebody or to say you feel the same way

What a ridiculous situation!
I know.

这境况真荒唐！
的确是。

say when

used to ask someone to tell you when to stop pouring them a drink or serving them food because they have got enough
够了请说一声（用于给某人倒饮料或添食物时）

I'll pour the cereal, you say when, OK?

here you are/here you go

used when you are giving something to someone

Here you are. This is what you were asking for.

sort of

kind of
to some extent but in a way that you cannot easily describe

Do you understand?
Sort of.

你懂了吗？
有点懂了。

I sort of like him, but I don’t know why.
我有点喜欢他，但不知道为什么。