写出下列形容词的比较级和最高级：（上下共两份，用于再巩固）Cheap_ _ small_ _ old _ _ high _ _ nice _ _ safe _ _happy _ _ heavy _ _early _ _ easy _ _big _ _ wet _ _important _ _difficult _ _angry _ _famous _ _interesting _ _excited _ _good _ _ill _ _ far _ _little _ _bad _ _polite _ _tired _ _few _ _thin _ _useful _ _ Cheap_ _ small_ _ old _ _ high _ _ nice _ _ safe _ _happy _ _ heavy _ _early _ _ easy _ _big _ _ wet _ _important _ _difficult _ _angry _ _famous _ _interesting _ _excited _ _good _ _ill _ _ far _ _little _ _bad _ _polite _ _tired _ _few _ _thin _ _useful _ _