Answer:
1.A piece of cake
In a sentence: Unclogging my sink was a piece of cake for Carlita. She’s a plumber.
Meaning: Extremely easy and straightforward.
2.Let the cat out of the bag
In a sentence: I'm planning a surprise holiday for Liam to celebrate our wedding anniversary. Don’t let the cat out of the bag!
Meaning: Reveal a secret by mistake.
3.Judge a book by its cover
In a sentence: I know he looks scary, but my dog is really gentle. You can’t judge a book by its cover.
Meaning: You shouldn’t make judgements based on appearance.
4.Break a leg
In a sentence: I hope the performance goes well, Adam. Break a leg!
Meaning: Good luck! (said before performing onstage)
5.Under the weather
In a sentence: Ayano was feeling under the weather, so she left work early.
Meaning: Not well, slightly sick or ill.
6.By the skin of your teeth
In a sentence: Maddy caught the train by the skin of her teeth. It left a few seconds later.
Meaning: By the smallest possible amount of time.
