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

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

Câu 1: ……….. is the state of not knowing how to read or write.

A. literacy

B. illiteracy

C. campaign

D. struggle

Câu 2: 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

Câu 3: 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 4: Whenever problems come up, we discuss them frankly and find solutions quickly.

A. happen

B. encounter

C. arrive 

D. clean

Câu 5: Billy, come and give me a hand with cooking.

A. help

B. prepared

C. be busy

D. attempt

Câu 6: Deserts often include _________ and rocky surface.

A. oil

B. water

C. sand

D. trees