11. keep one's shirt on     (침착하다)

    = try to be calm and patient

예문

   A : Can't you get ready any faster?

   B : No, so keep your shirt on!

 

12. on the house   (주인이 공짜로 내는)

     = provided free of charge by the owner

예문

   A : You mean we won't have to pay for our cocktails?

   B : Yes, the bartender said they were on the house.

 

13. run out of    (다 떨어지다)

    = have no more left

예문

   A : Do you have any sugar I could borrow?

   B : No, sorry but I ran out of it this morning.

 

14. smell a rat    (수상히 여기다)

    = suspicious that there's something wrong going on

예문

   A : Is he giving us all these gifts because he likes us?

   B : No, so I'm beginning to smell a rat.

 

15. play hooky    (학교를 빼먹다) 

    = stay away from school

예문

   A : Do you want to skip school today?

   B : Yes, let's play hooky and go fishing.