7. Change the given sentences according to the model. Make the sentences interrogative and negative, ask special and What-questions to the underlined words. Model: They are reading an instruction. ( What? ) Are they reading an instruction? They are not reading an instruction. What are they reading? l) We are developing new methods of firefighting. (What? ) 2) They will be testing new firre alarms at 10 a.m. tomorrow. ( When? ) 3) I am writing a report about the Fire triangle, because I have a seminar tomorrow. ( Why?) 4) The students were reading about the threat assessment at 2 p.m. yesterday. ( At what time? ) 5) 6) She was trying to fight with fire for 20 minutes. ( Who? ) You will be discussing the extinguishing agents at the conference. ( 7) He is checking the fire equipment at the factory. ( Where? ) What? )