Ex1: 

1. b 2. d 3. c 4. b 5. d 6. a 7. c 8. d 9.  10. c 11. 

Ex2:

The New Orleans Carnival is (not/big) ______not as big as_____ the carnival in Rio de Janeiro , but it is ( famous ) ______the most famous_____ carnival in the USA . It is ( colorful ) ______more colorful than_____ the carnival in Rio de Janeiro and it is ( exciting ) ______the most exciting_____ event in New Orleans every year . The weather in New Orleans is (not/good) ______not better_____ than in Rio de Janeiro , but people are (friendly) ______more friendly______ . The carnival season lasts for two weeks , but (busy) _____the busiest______ time is the last five days . The carnival is (big) _____bigger_____ and (exciting) ______more exciting_____ than ever during these five days . It is (good) ______the best_____ time to visit New Orleans

Ex3: 

1. as 2. as well as 3. as friendly as 4. from 5. as 6. the same as 7. too 8. either 9. paints 10. so 11. for

EX1 

1a

2b

3c

4d

5a

6c

7b

8a

9b

10d

11a

12b