Cambridge B1 Preliminary (PET) for Schools Practice Tests - Self-Study Pack (with CD and answers) 2. B1 Writing: Cambridge Masterclass with practice tests 3. Grammar & Vocabulary Practice - Intermediate B1 4. Grammar & Vocabulary Practice - Upper-Intermediate B2 5. Preactivate your Grammar and Vocabulary B1 - Teacher’s Book with Key (overprinted edition with answers) 6. Preactivate your Grammar and Vocabulary B1 - Test Book 7. Preactivate Your Grammar & Vocabulary B1 - Self-Study Pack (Student’s Book with Answer Key) 8. Cambridge B1 Preliminary (PET) for Schools Practice Tests - Teacher's Book - overprinted with answers 9. Preactivate Your Grammar & Vocabulary B1 - Student’s Book (without answer ke LA SEDIUL INSTITUTIEI O.P.