Câu hỏi: We are now a 24/7 society where shops and services must be available all hours.

A. an active society

B. an inactive society

C. a physical society

D. a working society

Câu 1: Solar energy is not only plentiful but also infinite.

A. without limit

B. boundless

C. limited

D. indefinite

Câu 2: The dim light made it hard to see, so Ben squinted to make out the stranger’s face in the distance.

A. faint

B. muted

C. weak

D. strong

Câu 3: The distinction between schooling and education implied by this remark is important.

A. explicit

B. implicit

C. obscure

D. odd

Câu 4: My cousin tends to look on the bright side in any circumstance.

A. be optimistic

B. be pessimistic

C. be confident

D. be smart

Câu 5: She is a very generous old woman. She has given most of her wealth to a charity organization.

A. mean

B. amicable

C. kind

D. hospitable

Câu 6: Population growth rates vary among regions and even among countries within the same region.

A. restrain

B. stay unchanged

C. remain unstable

D. fluctuate