Use the correct forms of the words in brackets:

Sulphur dioxide is a

and a major contributor to acid rain. (pollute)

Mark the letter A, B, C, or D on your answer sheet to indicate the word that has the underlined part pronounced differently from the others.

Mark the letter A, B, C or D on your answer sheet to choose the word whose underlined part is pronounced differently from the rest.

Choose the word that has the underlined part pronounced differently from the others.

Choose the word whose underlined part is pronounced differently.

Choose the word whose stress is put differently from that of the others.

Choose the word or phrase CLOSEST in meaning to the underlined part in the following sentence.

Thanks to the Internet and social media, we can communicate with each other instantly.

Mark the letter A, B, C or D on your answer sheet to choose the word or phrase CLOSEST in meaning to the underlined part in each of the following sentences.

Contamination is threatening the park and many species of animals living in it.