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

A. put up

B. catch up

C. work up

D. go with

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

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity

Câu 2: The computer has had an enormous _________ on the way we work.

A. alteration

B. change

C. impression

D. influence

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

A. help

B. prepared

C. be busy

D. attempt

Câu 4: 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 5: With the strong support of their countrymen, the Vietnamese athletes competed in ___________ spirits.

A. big

B. strong

C. high

D. lot

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

A. situation

B. attention

C. place

D. matter