Câu hỏi: The existence of different kinds of animals and plants which make a balanced environment is called........

A. biodiversity

B. rubbish

C. challenge

D. maintain

Câu 1: The 'ao dai' is the...............dress of Vietnamese women.

A. beautiful

B. traditional

C. casual

D. baggy

Câu 2: Some tiny organisms are..........along by the currents.

A. carried

B. taken

C. flowed

D. beside

Câu 3: Yesterday a hurricane hit the................of Vung Tau City.

A. coaster

B. coast

C. coasting

D. coastal

Câu 4: Mathematics and Literature are..............subject in high schools.

A. adding

B. compulsory

C. optional

D. religious

Câu 5: Some whales migrate into warm waters to bear their.............

A. young 

B. diets

C. calves

D. young whales

Câu 6: Chaplin's movies captivated.........throughout the world.

A. scientists

B. musicians

C. directors

D. audiences