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11. Mary runs ______ among them.

A. the fastest

B. the most fast

C. most fastly

D. most fast

12. Of all the things we eat and drink, water is the ______ important.

A. least

B. more

C. most

D. much

13. The Yellow River is the second ______ river in China.

A. long

B. longer

C. longest

D. most long

14. Traveling in England, it will be ______ cheaper if you buy a return ticket on the train.

A. more

B. very

C. quite

D. even

15. If you drink too much, your health will get even ______.

A. bad

B. poor

C. worse

D. not well

16. No sooner ______ his speech than a young woman stood up to ask a question.

A. the chairman finished

B. did the chairman finish

C. the chairman had finished

D. had the chairman finished

17. No sooner ______ the question than the answer came to him.

A. had he asked

B. he had asked

C. did he ask

D. he asked

18. The student doesn’t work ______ he used to.

A. so hard as

B. so harder than

C. as harder as

D. as hard like

19. I pulled the handle ______ I could.

A. so hardly as

B. as hardly as

C. so hard as

D. as hard as

20. The new model costs twice ____ last year’s.

A. more than

B. as much as

C. as many as

D. than