Language

In hot water

It’s raining cats and dogs

Hit the sack

A piece of cake

Cost an arm and a leg

A couch potato

Butterflies in my stomach

My blood is boiling

I am under the weather

Something that you say when it is raining heavily

I am very angry!

A person who doesn’t have an active life

Very expensive

I am sick!

Nervous and anxious

To be in difficulties

Go to sleep!

Very easy!