Câu hỏi: We are very grateful to Professor Humble for his generosity in donating this wonderful painting to the museum.

A. meanness

B. sympathy

C. gratitude

D. churlishness

Câu 1: Her father likes the head cabbage rare.

A. over-boiled

B. precious

C. scarce

D. scare

Câu 2: He is over the moon about his examination result.

A. stressed

B. very sad

C. very happy

D. satisfied

Câu 3: Solar energy is not only plentiful but also infinite.

A. without limit

B. boundless

C. limited

D. indefinite

Câu 4: His replies were inconsistent with his previous testimony.

A. contradicted

B. compatible

C. enhanced

D. incorporated

Câu 5: A chronic lack of sleep may make us irritable and reduces our motivation to work.

A. uncomfortable

B. responsive

C. calm

D. miserable

Câu 6: 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