Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It was not until the end of prehistoric  times that the first wheeled vehicles appearing .

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

I could hear voices but I couldn’t ______ what they were saying

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Due to ever more spreading poaching, there ______ a dramatic decline in the number of elephants over the last decade 

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You can use my car ______ you drive carefully

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. He's sometimes bad-tempered but he's a good fellow ______.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

These exercises look easy, but they are very relatively  difficult for us

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A large number of workmen ______ because of the economic recession

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Communities in remote areas are extremely _____ to famine if crops fail