$$5-5+5-5+5-5=0$$． 
Fill ``$$+$$'' or ``$$-$$'' between neighbouring numbers to make the number statement correct.  $$5$$ 　$$5$$ 　$$5$$ 　$$5$$　$$5$$ 　$$5=0$$ 
(1) $$+$$；$$-$$；$$+$$；$$-$$；$$+$$ 
(2) $$-$$；$$+$$；$$-$$；$$+$$；$$-$$ 
(3) $$+$$；$$+$$；$$+$$；$$-$$；$$-$$ 