When he opened the box, it a bad smell.A. gave awayB. gave inC. gave outD. gave up

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A. gave away
B. gave in
(答案→)C. gave out
D. gave up
解析：考查词组：A. gave away泄露，赠送，B. gave in屈服， C. gave out分发，泄露，散发，D. gave up放弃，句意：当他打开盒子，散发出难闻的气味。选C。