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1. Tết holiday is more interesting than the Vietnamese traditional festival that he's ever attended.
A. He has never attended a more interesting Vietnamese traditional festival than Tết holiday.
B. He has attended many interesting Vietnamese traditional festival including Tết holiday.
C. He has attended many interesting Vietnamese traditional festivals.
D. Tết holiday is one of the most interesting Vietnamese traditional festivals than in Western ones.

15. There are more superstitious beliefs in Eastern countries than in Western ones.
A. Western countries don't have fewer superstitious beliefs than Eastern ones.
B. Eastern countries have more superstitious beliefs than Western ones.
C. Eastern and Western countries have many more superstitious beliefs.
D. More superstitious beliefs exist in Western countries than in Eastern ones.

16. Phở (rice noodles) is believed to be the most typical food in Vietnam.
A. It is believed that Phở (rice noodles) is the most typical food in Vietnam.
B. A more typical food than Phở (rice noodles) is believed in Vietnam.
C. I believe that Vietnam has the most typical food like Phở (rice noodles).
D. No food in Vietnam is less typical than Phở (rice noodles).

17. I have never read a better book about cultural diversity than I have ever read.
A. This book is a good book about cultural diversity than I have ever read.
B. This is the best book about cultural diversity I have ever read.
C. This book is as good as the one about cultural diversity I have ever read.
D. The book about cultural diversity I have ever read isn’t better than this one.

18. Lee talks to people more politely than Ben.
A. Ben doesn't talk to people as politely as Lee.
B. Ben doesn't talk to people politely as Lee.
C. Ben doesn't talk to people more politely than Lee.
D. Ben doesn't talk to people less politely than Lee.

19. No student in my class can run as fast as Jack.
A. Jack is faster than no student in my class.
B. Jack is the fastest runner in my class.
C. All students in my class don’t run faster than Jack.
D. No student in my class runs fast as Jack.

20. This question is harder than the last one.
A. The last question is not difficult.
B. This question is the most difficult one.
C. The last question is difficult but this one is more difficult.
D. This question is hard but the last one is not.

21. As Elton John became more famous, it was more difficult for him to avoid reporters.
A. The most famous Elton John became, the more difficult for him to avoid reporters.
B. The more famous Elton John became, the more difficult it was for him to avoid reporters.
C. The more famous Elton John had become, the more difficult for him to avoid reporters.
D. The more Elton John became famous, the more difficult for him to avoid reporters.

22. We cut down many forests. The Earth becomes hot.
A. The more forests we cut down, the hotter the Earth becomes.
B. The more we cut down forests, the hotter the Earth becomes.
C. The more forests we cut down, the Earth becomes hotter.
D. The more we cut down forests, the Earth becomes hotter.

23. As he earned more money, Mike bought more and more clothes.
A. When Mike earned a lot of money, he bought more and more clothes.