New worksheets to practise PET and Advanced levels 26 de mayo de 2014 Idiomas Two new worksheets to pratise PET and Advanced levels. Click on these links to see them: PET: PET-INTERMEDIATE – Infinitive or Gerund. PET-INTERMEDIATE – Infinitive or Gerund 2 Advanced: ADVANCED VOCABULARY – Colour Idioms. ADVANCED VOCABULARY – Confusing and Similar Words in English