Câu hỏi: 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

Câu 1: 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 2: The event, watched by millions of people all over the country, takes place annually.

A. sometimes

B. once every year

C. regularly

D. smoothly

Câu 3: 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 4: The twins look so much alike that no one can tell them apart.

A. distinguish between them

B. point out with them

C. spoil them

D. pick them out

Câu 5: It was inevitable that the smaller company should merge with the larger one.

A. vital

B. unnecessary

C. urgent

D. unavoidable

Câu 6: He made one last futile effort to convince her and left home.

A. favorable

B. difficult

C. ineffectual

D. firm