Помогите,плез,не понимаю 10. Today the world _____ so rapidly; things never stay the same. 1)changes 2)has changed 3)is changing 4)has been changing 11. When I first ____ to England in 1938, I thought I knew English fairly well...

Помогите,плез,не понимаю 10. Today the world _____ so rapidly; things never stay the same. 1)changes 2)has changed 3)is changing 4)has been changing 11. When I first ____ to England in 1938, I thought I knew English fairly well. 1)came 2)had come 3)was coming 4)had been coming 12. Sara, my next door neighbour, has a car, but she _____ it very often. 1)doesn't use 2)isn't using 3)hasn't used 4)hasn't been using 13. It's raining, and I see you don't have an umbrella. You can borrow mine, I ______ it now. 1)don't need 2)did not need 3)haven't needed 4)haven't been needing 14. Suddenly they heard a strange noise and ______ at each other in horror. 1)looked 2)were looking 3)had looked 4)had been looking 15. What _____ this word mean? 1)Do 2)Does 3)Did