costs an arm and a leg(Idiom)

Explanation

例句翻譯: Sam's house repairs cost an arm and a leg. He spent three months' salary on them. 山姆整修房子花了大筆的金錢。他砸了三個月的薪水在上面。 正確答案是 B costs an arm and a leg 價錢非常昂貴