Câu hỏi: American spends more money on fast food .................... country in the world.

A. while other

B. than any other  

C. than other

D. other than

Câu 1: Biology is…………………..of all my classes this semester.

A. the hardest

B. harder

C. hardly

D. harder than

Câu 2: Bill ordered two .....................  pizzas.

A. large

B. largeness

C. largely

D. largest

Câu 3: Steve ate his dinner .................. 

A. quick

B. quickly

C. quicken

D. quickened

Câu 4: Chris is…………………than his brother.

A. short

B. shortest

C. the shortest

D. shorter

Câu 5: The weather yesterday was extremely .......................

A. hotly

B. heat

C. hot

D. heater

Câu 6: This jacket is ....................... the others we've just seen.

A. far most expensive

B. father more expensive than

C. further more expensive

D. far more expensive