Apersonwithgoodmannersneverlaughs________peoplewhentheyare_________tro

发布时间：2020-08-06 20:48:20

A person with good manners never laughs ________ people when they are _________ trouble.A.on, inB.in, atC.on, atD.at, in

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D解析考查介词。laugh at sb.“嘲笑某人”，be in trouble“陷入困境中”。故选D。
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