. ‘To cost an arm and a leg’– something is very expensive.
“Fuel these days costs and arm and a leg.”
7. ‘A piece of cake’– something is very easy.
“The English test was a piece of cake.”
8. ‘Let the cat out of the bag’ – to accidentally reveal a secret.
“I let the cat out of the bag about their wedding plans.”
9. ‘To feel under the weather’ – to not feel well.
“I’m really feeling under the weather today; I have a terrible cold.”
10. ‘To kill two birds with one stone’ – to solve two problems at once.
“By taking my dad on holiday, I killed two birds with one stone. I got to go away but also spend time with him