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

A. take

B. make

C. have

D. do

Câu 1: 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 2: I missed the lessons yesterday so I have to___________ on work.

A. put up

B. catch up

C. work up

D. go with

Câu 3: Deserts often include _________ and rocky surface.

A. oil

B. water

C. sand

D. trees

Câu 4: ______- is natural environment in which plant or animals live.

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

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

A. help

B. prepared

C. be busy

D. attempt

Câu 6: This is the instance where big, obvious non-verbal signals are appropriate.

A. situation

B. attention

C. place

D. matter