Câu hỏi: Although the staff did expand somewhat for the first century of its existence, the entire teaching staff consisted of the president and three or four tutors.

A. to and from

B. more or less

C. back and forth

D. side by side

Câu 1: ______- is natural environment in which plant or animals live.

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

Câu 2: Do you know how many countries __________ part in the sporting event?

A. take

B. make

C. have

D. do

Câu 3: Many plants and animal species are now on the _______ of extinction.

A. danger

B. border

C. margin

D. verge

Câu 4: We must start a …………. for illiteracy eradication immediately

A. contest

B. company

C. champion

D. campaign

Câu 5: _____________ 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 6: I missed the lessons yesterday so I have to___________ on work.

A. put up

B. catch up

C. work up

D. go with