Alexander borodin was a genius in two fields:music and chemistry.Composing music was really a hobby for him,but he is considered one of the greatest Russian composers.His opera "Prince Igor"is considered to be one of the most important historial Russian operas.
He studied peano and cello as a youth,but got interesed in chemistry after trying to make fireworks.He studied medicine,and became a surgeon for the Russian army.
Later,he became professor of chemistry at the Medico-Surgical Academy in St.Petersburg,and spend the rest of his life teaching students there.He loved teaching.He also spent a lot of his time doing scientific experiments.
1. If I had a car I would drive to my office every day.
2. Gregory would have gone on a boating trip to Lake Michigan if he had been free.
3. Lora was not in school yesterday. She may have had an accident.
4. He said he could manage for the time being but he would need some help later.
5. Bet was supposed to be home at 7 o'clock. She must have forgotten about Sarah’s visit.
6. Where do you think he is today? He may have slept late.
7. Lora missed her classes today. She might have fallen ill.
8. Robert arrived without his book. He could have lost it.
9. Mary received a warning for speeding. She shouldn't have driven so fast.
10. His car stopped on the way to the bank. It may have run out of petrol.
