4 Underline the correct verb form. 1 His plane took off/ has taken off a few minutes ago.
2 How many emails have you received I have you been
receiving today?
3 Look at the oil marks on the floor! You've fixed /
've been fixing your bike in here, haven't you?
4 The CEO has resigned / has been resigned and a new
CEO has appointed / has been appointed.
5 I work I've been working here since June. When did
you start / have you started?
6 A huge snowstorm has hit / has been hit New York.
Over 40 centimetres of snow has fallen / has been falling
in the past 12 hours. People have advised / have been
advised to stay indoors.​

1. high - higher - the highest

2. small - smaller - the smallest

3. large - larger - the largest

4. heavy - heavier - the heaviest

5. new - newer - the newest

6. interesting - more interesting - the most interesting

7. beautiful - more beautiful - the most beautiful

8. difficult - more difficult - the most difficult

9. creative - more creative - the most creative

10. careful - more careful - the most careful

11. bad - worse - the worst

12. many - more - the most

13. good - better - the best

14. little - less - the least

There are a great number of different writers in each country. But my favourite writer is Sir Arthur Conan Doyle. He is famous for his detective stories about Sherlock Holmes. 
The British writer was born in Scotland on 22 of May 1859. He had a big family. He had parents and seven brothers and sisters.
Konan Doyle started to write when he was a third-year student. But his first story appeared whe the writer was 6 years old. It was called Traveller and Tiger. In the university he wrote A Study in Scarlet. It was the first book about the famous detective. It is interesting that the prototype of this character was Konan Doyle's teacher professor Joseph Bell. He was given such horner for his power of observation, logic and his ability to draw right conclusions.
Except detective stories the author wrote fantacy and science fiction. If you are fond of it, I recomend you to read such books as The Lost World, The Doings of Raffles Haw or The Maracot Deep. Many critics and readers note that Doyle's works are remarcable for the reality of the naration. While reading you belive that places and things described the a book exist.