PIECE OF CAKE

English: It is a piece of cake.

Spanish: Es muy fácil.

Arabic: إنه أمر سهل

AN ARM AND A LEG

English: It costs an arm and a leg.

Spanish: Cuesta un ojo de la cara.

Arabic: هذا يكلف الكثير

CATS AND DOGS

English: It is raining cats and dogs.

Spanish: llueve a cántaros.

Arabic:   يَهْطِلُ المَطَرُ بِغَزارةٍ