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

A. the hardest

B. harder

C. hardly

D. harder than

Câu 1: These are very .................... chairs.

A. comfort

B. comfortably

C. comfortable

D. comforts

Câu 2: The weather yesterday was extremely .......................

A. hotly

B. heat

C. hot

D. heater

Câu 3: It’s too ............... to work in here.

A. noisify

B. noisy

C. noise

D. noises

Câu 4: Kathleen was the only student………………..the test.

A. falls

B. is failing

C. failed

D. to fail

Câu 5: Today is………………..day we have had all week.

A. colder than 

B. the coldest

C. colder

D. coldest

Câu 6: The price of his car is ....................... that of my car.

A. twice as much than

B. as twice as

C. twice as much as

D. more twice than