think tmice before you

think tmice before you Think before you Think twice before you do. think carefully before you leap You should think carefully before you _b___anything. think carefully before you buy a car Think it over carefully before you decide think twice,act wise,look before you Think carefully before you act.意为? Why do you think B comes before You should think it over before you made a d_______. before you make a (dee ),you shoudly think it over.