Câu hỏi: Each nation has many people who voluntarily take care of others.

A. bring along

B. get on with

C. keep up with

D. look after

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

A. danger

B. border

C. margin

D. verge

Câu 2: Some of the participating schools have also decided to use green cleaning products, which are safer since they do not ……. harmful chemicals into the environment.

A. release

B. expose

C. compound

D. deplete

Câu 3: Billy, come and give me a hand with cooking.

A. help

B. prepared

C. be busy

D. attempt

Câu 4: The computer has had an enormous _________ on the way we work.

A. alteration

B. change

C. impression

D. influence

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

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

Câu 6: When someone …………… a poem or other piece of writing, they say it aloud after they have learn it.

A. recites

B. takes part in

C. completes

D. complete