Câu hỏi: 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 1: We must start a …………. for illiteracy eradication immediately

A. contest

B. company

C. champion

D. campaign

Câu 2: The construction work was carried out by the local contractor.

A. continued

B. completed

C. done

D. run

Câu 3: _____________ is a film or TV program presenting the facts about a person or event.

A. Biography

B. Horror films

C. Detective books

D. Documentary

Câu 4: Do you know how many countries __________ part in the sporting event?

A. take

B. make

C. have

D. do

Câu 5: The computer has had an enormous _________ on the way we work.

A. alteration

B. change

C. impression

D. influence

Câu 6: ______- is natural environment in which plant or animals live.

A. Ecology

B. Habitat

C. Extinction

D. Biodiversity