Idiom 151: let someone off the hook

상황: 용의선상에서 벗어나다라고 할 때 쓰는 표현입니다.

let someone off the hook = excuse from a penalty or promise

Because this eas his first criminal offense, he was let off the hook.

Idiom 150: Rack one's brain

상황: 어떠한 순간에 쉽게 써왔던 무언가를 생각해 내려고 했던 경험이 있으실 것입니다. 친한 친구의 전화번호, 집 전화번호, 심지어 자기 셀폰번호등등. 이런 경우를 가리킬 때 사용하는 표현입니다.

rack one's brain = try to hard to think or remember

I racked my brain to remember who I was supposed to call back.

Common errors 54: Historic vs. Historical

historic means famous in history, memorable, or likely to go down in recorded history
a historic meeting

historical means existing in the past or representing something that could have happened in the past
a historical novel
a historical fact

Common errors 53: Heroin vs. Heroine

heroin: a drug

heroine: a female hero

Idiom 149: Have it made

상황: 어떤 하는 것에 성공하는 것을 가리킬 때 사용하는 표현으로 만사형통이라고도 하죠.

have it made = have accomplished all there is to do = be sure of success = have everything

Ever since she won the lottery, she can do whatever she wants. She has it made.