Are these statements true or false? Correct the false ones. 1. Alexander has a younger brother. 2. His brother studies in a theatre school. 3. Liudmila Mikhailovna is a cook. 4. She spends a lot of time reading. 5. She sometimes checks Alexander's and Alexei's homework. 6. Konstantin Alexeevich is a professor at a medical university. 7. He arranges the free time of his sons. 8. Alexander's grandparents do scientific research. 9. Alexander likes everything to be in order. 10. Alexei's duty is to clean the rooms.