1. The more she smiles , ................ she becomes.
A. more graceful B. the most graceful C. most graceful D. the more graceful
2. Hotels have developed …………………… restaurants.
A. as rapidly as B. so rapidly as C. as rapid as D. more rapid
3. Can Tho bridge is the …………………… one in the South of Viet Nam.
A. long B shortest C. longest D. longer
4. Albert Einstein’s contributions to scientific theory were ................ those of Galileo and Newton.
A. important than B. more important C. the most important D. as important as
5. Impalas cannot move as ................ cheetahs but they are more efficient runners.
A. faster than B. fast as C. fast D. are fast as
6. Both are informative articles, but this one is ................ .
A. best B. the best C. most D. better
7. She is the .………… girl in our town .
A. more beautiful B. beauty C. most beautiful D. more beautifully 
8. The harder you learn............. 
A. The better is your English
B. The better will be your English
C. The better becomes your English 
D. The better your English will be
9. Jim is the ................. in his class.
A. clever B. cleverest C. cleverer D. more clever
10. Of the two shirts, this one is ...................
A. the prettiest B. the most pretty C. prettier D. the prettier
11. Your house is ................. mine.
A. as bigger as B. many times as big as C. much big as D. not many times big
12. Last year it wasn’t as cold as this year.
A. This year it is as colder than last year.
B. This year it is colder than last year.
C. This year it isn’t as cold as last year.
D. This year it isn’t colder than last year.
13. She is older than me.
A. I’m more younger than her. 
B. I’m as younger as her.
C. I’m more young than her. 
D. I’m younger than her.
14. The test is not ………………… 
A. as difficult as it was last month. 
B. so difficult as it was last month 
C. more difficult as it was last month. 
D. Both A & B are correct 
15. The Nile River is ………………… of all. 
A. longer B. the longest C. long D. longest