Замените времена группы Indefinite временами группы Continuous
дополнив предложения обстоятельствами времени: now, at 11 o’clock, when you came, from… to, all the day, где необходимо. 
1. First-year students work in the anatomy museum. 2. He will make ;i report on the muscular system. 3. She prepared the text «Voluntary and Involuntary Muscles» at home. 4. We translated 5 sentences from this text. 5. Last Monday we had a practical lesson on the structure and functions of smooth muscles.