Câu hỏi: When you see your teacher approaching you, a slight wave to attract his attention is appropriate.

A. coming nearer to

B. pointing at

C. looking up to

D. catching sight of

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

A. danger

B. border

C. margin

D. verge

Câu 2: Billy, come and give me a hand with cooking.

A. help

B. prepared

C. be busy

D. attempt

Câu 3: Deserts often include _________ and rocky surface.

A. oil

B. water

C. sand

D. trees

Câu 4: He is one of the most ………. bosses I have ever worked with. He behaves rudely to not only me but also others in the staff.

A. thoughtful

B. impolite

C. attentive

D. communicative

Câu 5: With the strong support of their countrymen, the Vietnamese athletes competed in ___________ spirits.

A. big

B. strong

C. high

D. lot

Câu 6: 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