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

A. the hardest

B. harder

C. hardly

D. harder than

Câu 1: The people………………….this office are very helpful.

A. In

B. work

C. are working

D. work in

Câu 2: 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

Câu 3: The weather yesterday was extremely .......................

A. hotly

B. heat

C. hot

D. heater

Câu 4: The people…………………next door aren't very friendly.

A. are living

B. live

C. is living

D. living

Câu 5: Chris is…………………than his brother.

A. short

B. shortest

C. the shortest

D. shorter

Câu 6: Choose the one word or phrase that best completes the sentence.

A. old

B. older

C. the oldest

D. oldest