For goodness' sake

To have no clue

Never heard of

Never mind

Pretty soon

As good as it gets

It is up to you

Take your time

So far, so good

How come?

To kill two birds with one stone

As far as I know

As if!

As lost as a nun on a honeymoon

Bite your tongue!

My lips are sealed

Right in the bull’s eyes!

Saved by the bell

This is going to be a piece of cake