Câu hỏi: Whenever problems come up, we discuss them frankly and find solutions quickly.

A. happen

B. encounter

C. arrive 

D. clean

Câu 1: Many plants and animal species are now on the _______ of extinction.

A. danger

B. border

C. margin

D. verge

Câu 2: We must start a …………. for illiteracy eradication immediately

A. contest

B. company

C. champion

D. campaign

Câu 3: With the strong support of their countrymen, the Vietnamese athletes competed in ___________ spirits.

A. big

B. strong

C. high

D. lot

Câu 4: _____________ is a film or TV program presenting the facts about a person or event.

A. Biography

B. Horror films

C. Detective books

D. Documentary

Câu 5: ______- is natural environment in which plant or animals live.

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

Câu 6: I missed the lessons yesterday so I have to___________ on work.

A. put up

B. catch up

C. work up

D. go with