Mark the letter A, B, C or D on your answer sheet to choose from the best answer to complete each sentence.

______ air makes people unpleasant to breathe.

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.

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 whose stress is placed differently from that of the others.

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

Mark the letter A, B, C or D on your answer sheet to choose from the best answer to complete each sentence.

Nearly 1,000 of the world's bird species are threatened with ________.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each the following question

Today’s scientists have overcome many challenges of the depth by using modern devices.