1. Broken heart

Meaning:
Feeling very sad or hurt:
Example:
Sandra’s husband has left her. She’s suffering from a broken heart.

2. The apple of my eye

3.Snake in the grass

Meaning:
A bad person who wants to cause harm to others:
Example:
I don’t think we should trust Jim to work on this project with us. He’s a real snake in the grass.

4. Spill the beans

Meaning:
To tell someone something that should be kept as a secret:
Example:
Hey, please don’t tell anyone that I’m getting married to Rita. I don’t want to spill the beans just yet.

5. Give someone a hand

Meaning:
To help someone:
Example:
Catherine was really struggling with her math homework, so I gave her a hand.