It is imperative ____ what to do when there is a fire.

Although some societies are ____ undeveloped, their languages from linguist's point of view are very complex.

The plane ____ down 20 minutes later than scheduled because of the bad weather.

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

Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.