Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I ______ on this project for many consecutive days without success. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

It is essential that he __________. His illness seems worse. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

My parents lent me the money. ________, I couldn’t have afforded the trip. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

It is stated that we are now in the first stages of a battle for the ______ of life on the earth. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

You should concentrate ___________ what the interviewer is saying and make a real effort to answer all the questions. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

______ she could not say anything. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

________ appears considerably larger at the horizon than it does overhead is merely an illusion.

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 of the following questions.

If that was done on a national scale, we would wipe out this infectious disease.