The most suitable pair of words that can be substituted in the blanks:Throughout Bangladesh, thousands of tube wells have tested ______ for Arsenic and have been declared______for human consumption
A. Contaminated........precarious
B. Affirmative..........risky
C. Positive.........unsafe
D. New..........unsuitable
সঠিক উত্তরঃ
C.
Positive.........unsafe
Explanation:
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