Câu hỏi: The harder he tried, the worst he danced before the large audience.

A. worst

B. the

C. before

D. tried

Câu 1: The bones of the elderly are more prone to fractures than of young people.

A. the elderly 

B. more

C. to

D. of

Câu 2: The number of students attending universities to study economics have increased steadily in the last few years.

A. of students

B. attending

C. economics

D. have

Câu 3: It is recommended that people to take regular exercise.

A. recommended

B. people

C. to take

D. exercise

Câu 4: If they took their language lesson seriously, they would be able to communicate with the locals now.

A. took

B. seriously

C.  would be

D. with the locals

Câu 5: Could you tell me how can I get to the city library, please?

A. Could

B. me

C. how can I

D. the

Câu 6: The world is becoming more industrialized and the number of animal species that have become extinct have increased.

A. industrialized

B. species

C. extinct 

D. have