The oxygen concentration in the lungs is higher than in the blood.
Correct answer A. the oxygen
Tip: press A, B, C or D to answer, and N for the next question.
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More Adjective questions
See allSome property of lead are its softness and resistance.
Correct answer A. some property
It is the world’s largest group of islands forming a ten thousand islands chain.
Correct answer D. a ten thousand islands
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As many 100 billion stars are in the milky way.
Correct answer A. as many 100
An usual treatment for the flu is to drink plenty of liiquids.
Correct answer A. an usual
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