is the only change is the only child is the only choice is the only color is the only commercial is the only company is the only connection is the only constant is the only constant in is the only continent is the only country is the only country where is the only cure is the only daughter is the only day is the only difference is the only drug is the only effective is the only element is the only english is the only evidence is the only exception is the only factor is the only family is the only female is the only food is the only form is the only free is the only friend is the only fully is the only game is the only god is the only good is the only good thing is the only guarantee is the only home is the only honest is the only hope is the only hotel is the only house is the only human is the only independent is the only information is the only institution is the only instrument is the only key is the only known is the only language is the only life is the only light is the only living is the only male is the only medicine is the only moment is the only name is the only nation is the only natural is the only number is the only official is the only one is the only one here is the only one i is the only one left is the only one who is the only opportunity is the only option is the only organ is the only organization is the only original is the only other person is the only path is the only permanent is the only place is the only place i is the only place where is the only place you is the only planet is the only plant is the only player is the only possible way is the only president is the only problem is the only product is the only rational is the only real is the only reality is the only reason is the only reason i is the only reason we is the only reason why is the only reason you is the only religion is the only remedy is the only restaurant is the only right is the only road is the only rule is the only safe is the only sane