Cepillarse:
Divertirse:
Remember that reflexive verbs need a reflexive pronoun to use (me, te, se, nos, os). It depends on who the verb falls to, a different reflexive pronoun will be used.
As the verb "cepillarse" and "divertirse" are reflexive, they must be added after the verb when the form of the verb is impersonal (infinitive, gerund and participle). In this case "-se".
MissSpanish