Câu hỏi: In the twentieth century, drug markedly improved health throughout the world.

A. supposedly

B. noticeably

C. recently

D. consistently

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: All classifications of human societies and cultures are arbitrary.

A. useful

B. haphazard

C. insufficient

D. ambiguous

Câu 3: The collapse of the stock market in 1929 signaled the beginning of the Depression.

A. debt

B. rebirth

C. rise

D. failure

Câu 4: The purpose of this survey is to determine students’ attitudes toward love and marriage.

A. find out

B. develop

C. concern

D. build

Câu 5: 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 6: I’m becoming increasingly absent-minded. Last week, I locked myself out of my house twice.

A. being considerate of things

B. remembering to do right things

C. forgetful of one’s past

D. often forgetting things