I. Active or passive? Put the verbs into the correct form. 1. There is somebody walking behind us. I think we (follow) __________. 2. Every time I print a document, the printer (break) __________ down. 3. Apples (say) __________ to be good for our health. 4. Hoa (bear) __________ in Hue but she (grow) _________ up in Hanoi. 5. “Is Thanh’s house still for sale?” – “No, it (sell) ________ since last month.” 6. The application form should (send) _________ today so that I (arrive) _________ the next day. 7. How _______ cakes (make) _______? _______ you (ever/ make) _______? 8. I (see) _______ an accident last night. Somebody (call) _______ an ambulance but nobody (injure) ________ so the ambulance (not/ need) ________. 9. “Who (invent) ________ the microphone?” “It (invent) ________ by D.E. Hughes in 1878.” 10. The printer (break) _______ down yesterday, but now it’s OK. It (work) _______ again; it (repair) _________. 11. The professor (give) ________ a speech on history at the moment. 12. A research (do) _______ by the professor for three years. 13. An English-speaking club (hold) _______ in our school next year. 14. We (organize) ________ a workshop on environment this weekend. 15. Something (do) ________ in our city to improve living condition so far. 16. They (take) _______ part in a contest last year. 17. We (go) ________ home with you then. Do you agree? 18. Flowers (cut) _______