Câu hỏi: People are busy buying gifts, cleaning and decorating the house and cooking traditional foods to welcome Tet holiday now.

A. favorite

B. important

C. customary

D. national

Câu 1: Now I understand why you moved out of that house.

A. I am surprised

B. it frustrates me

C. I am intrigued

D. it makes sense to me

Câu 2: Most ethnic groups in Vetnam have their own costumes that reflect their unique culture identities.

A. invaluable

B. different

C. distinctive

D. important

Câu 3: He was asked to account for his presence at the scene of crime.

A. complain

B. exchange

C. explain

D. arrange

Câu 4: Fallout from a nuclear power station damaged in the tsunami may endanger the vegetation.

A. stimulate

B. harm

C. inhibit

D. benefit

Câu 5: As tourism is more developed, people worry about the damage to the flora and fauna of the island.

A. fruits and vegetables

B. flowers and trees

C. plants and animals

D. mountains and forest

Câu 6: How many countries took part in the last Olympic Games?

A. participated

B. performed

C. succeeded

D. hosted