The United States of America is a union of fifty states and is the third largest country in the world

Key. Exercise 1

1. 
   Well – better (than) – best (of all),
   
2. 
   Badly – worse (than) – worst (of all),
   
3. 
   Far – farther/further (than) – farthest/furthest (of all),
   
4. 
   here, outside – нет степеней сравнения,
   
5. 
   easily – more easily (than) – most easily (of all) или easily – easier (than) – easiest (of all)
   
6. 
   mostly – нет степени сравнения,
   
7. 
   fast – faster (than) — fastest (of all),
   
8. 
   loudly – more loudly (than) – most loudly (of all) или loudly – louder (than) – loudest (of all)
   
9. 
   usually – нет степени сравнения,
   
10. 
    carefully – more carefully (than) – most carefully (of all),
    
11. 
    happily – more happily (than) – most happily (of all),
    
12. 
    patiently — more patiently (than) – most patiently (of all),
    
13. 
    dangerously – more dangerously (than) – most dangerously (of all).
    

Exercise 2.
Choose the right adverb degree of comparison to complete the sentences.

• 
  more brightly; more completely; latest; highest; louder; most gracefully; fastest ; faster
  

slowest; more calmly.
Exercise 3.
Harder / harder, 2 more widely, 3 better, 4 faster, 5 better, 6 more often (oftener), 7 farther, 8 (more slowly) slower, 9 worst, 10 more distinctly

Exercise 4.
1 -> correct;
2 most late -> latest;
3-> correct;
4 patienter -> more patiently;
5-> correct;
6-> correct;
7-> correct;
8 more near -> nearer
9 frequentest -> most frequent;
10 -> correct;
11-> correct;
12-> correct;
13 peacefullier -> more peacefully;
14 more early -> earlier;
15 most fast – fastest;

Exercise 5. Form Adjectives to Adverbs

Ex: Linda is ... (amazing) clever. - Linda is amazingly clever.
1. She ... (easy) ended her training.
2. Kim always acts ... (strange).
3. This movie is ... (extreme) funny.
4. His eyes are ... (nervous) shifty.

Exercise 6. Choose the best answer to complete each sentence.

Пример: My friends are most / mostly gamers. - My friends are mostly gamers.
1. The dress was pretty / prettily ornamented.
2. The tree was so high / highly that she couldn't see our window.
3. The Smiths may be late / lately because they have to meet their relatives at the station.
4. She warm / warmly smiled at me.
5. She lives in Spain, so we hard / hardly ever see her.