English CU - Unit 4 - Page 56 (Grammar)

The team of biologists (a)   the effects of pollution on plant for years

The government (a)   measures to limit sea pollution by passing new laws in 2000

Overfishing (a)   some species to become extinct over the years.

Ecotourism (a)   to become popular when I was at university.

The use of fossil fuels (a)   the amount of carbon dioxide in the atmosphere in the past few years.

The scientist (a)   research on coral reefs since he left university.

Sea levels (a)   gradually in the last 10 years.

The journalist (a)   writing an article on the Amazon a month ago.

____ North Pole is located in the middle of the Arctic Ocean.

• A

• -

• The

He can speak many languages, but he can't speak ____ Arabic.

• the

• -

• an