Выполни английский

Here are the sentences with the correct verb forms filled in: 10. Laura **was studying** at 11pm last night. 11. I **was walking** along the road when I **met** an old friend. 12. It **was being** a day in December. Snow **was falling**, children **were singing** carols, and people **were doing** their Christmas shopping. 13. My ex-boyfriend **always missed** the bus and **arrived** late. 14. When I **called** Julie, she **was sleeping**. 15. Why **were you crying** when I **arrived**? 16. When he **got** home, we started to eat dinner. 17. At 10am yesterday I **was sitting** on a bus. 18. I **enjoyed** my book so much that I **didn't notice** the train had stopped. 19. David **wasn't working** when I **arrived**. 20. Mr. Black **wasn't working** in the garden at 10pm last night.