Choose the best answer among A, B, C or D that best completes each sentence.

________ is a term that refers to the existence of different kinds of animals and plants which make a balanced environment.

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

Choose the word which has a different stress pattern from the others.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose primary stress is different from the others.

Choose the best answer to each of the following questions.

 Fossil fuels which are non-renewable pollute the air and cause air ______.

Choose the best answer among A, B, C or D that best completes each sentence.

Wildlife all over the world is ___________ danger.