Câu hỏi: All classifications of human societies and cultures are arbitrary.

A. useful

B. haphazard

C. insufficient

D. ambiguous

Câu 1: We’ll have to use the restrooms on the next floor because the ones on this floor are not in working condition

A. out of work

B. run out of

C. turn down

D. out of order

Câu 2: Perhaps more than anything else, it was onerous taxes that led to 'the Peasants' Revolt in England in 1381.

A. multiple

B. unjust

C. burdensome

D. infamous

Câu 3: An Alzheimer patient’s incomprehensible ramblings will frequently upset family members, who may take the statements personally.

A. rude

B. personal

C. loud

D. unintelligible

Câu 4: Most of the school-leavers are sanguine about the idea of going to work and earning money.

A. fearsome

B. expected

C. excited

D. optimistic

Câu 5: Once in a while I visit my grandparents on the farm and stay there for some days.

A. Regularly

B. Sometimes

C. Usually

D. Rarely

Câu 6: The systems caused by ingestion of a harmful chemical must be counteracted within minutes in order to avoid permanent damage to the kidneys and other vital organs.

A. alleviated

B. increased

C. distributed

D. summed up