Question

    For many years, the recurring outbreak, which had

    killed over 100 children last year, ________ to be due to the Japanese encephalitis (JE) virus. 
    A was thought Correct Answer Incorrect Answer
    B is thought Correct Answer Incorrect Answer
    C is thinking Correct Answer Incorrect Answer
    D will be thinking Correct Answer Incorrect Answer
    E is think Correct Answer Incorrect Answer

    Solution

    Since FOR MANY YEARS has been used, it refers to the years in past, hence past tense should be used in the blank as the tense throughout the sentence must be constant. Hence, WAS THOUGHT will be used.

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