Complete the sentences 1. leonardo davinci (born) in . 2. his best-known painting (be) . 3. he (paint) it for a long time. 4. one of his work (be) a vitruvian man. he (study) anatomy before he painted the vitruvian man. 5. by observing the movements of birds he (invent) the very first flying machines. 6. he also (study) the flowing motions of the waves and (apply) his discoveries to technological innovations. 7. as an engineer leonardo (be) centuries ahead of his time.