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

A. In

B. work

C. are working

D. work in

Câu 1: Chris is…………………than his brother.

A. short

B. shortest

C. the shortest

D. shorter

Câu 2: The plant…………………………the window needs water.

A. by the time

B. by

C. is by

D. is

Câu 3: Biology is…………………..of all my classes this semester.

A. the hardest

B. harder

C. hardly

D. harder than

Câu 4: 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

Câu 5: Laser discs provide images of ............................ than those ofeither television signals or video tapes.

A. best quality

B. the best quality

C. better quality

D. good quality

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

A. old

B. older

C. the oldest

D. oldest