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Psychologists have observed that a large part of the _________ activity is beyond one’s awareness.

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If I had gone to the party last night, I ________tired now.

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In some countries, octopuses (A) and snail are considered(B) being(C) great delicacies to eat.(D)

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The skin receives nearly (A) the (B) third of the blood pumped(C) out by(D) the heart.

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I love that _______ antique car that always parked at the end of the street.

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Graduate students often spend their weekends_______data for their research.

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The fewer the number of threads per inch, the _________ texture.

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It is likely(A) that everyone in Vietnam has(B) his own(C) house and car by(D) 2050.