English Version en ligne Repasa lo básico en Ingles par liseth santana 1 What is the estructure of the verb to be? a subject + verb + complement b complement + verb + subject c subject + complement + verb d subject + has/have + complement 2 choose the structure of the present perfect negative a subject + past participle+ haven't/ hasn't b subject + haven't/hasn't+ past participle c subject + have/ has + past participle d have/has + subject + past participle?