---Whydoyoukeepthewindowsopenonsuchacoldday?---Therearesomanystuden

发布时间：2020-08-12 18:42:19

---Why do you keep the windows open on such a cold day? ---There are so many students here, so we want to keep the air nice and __A.coldB.dryC.coolD.clean

网友回答

D解析在寒冷的天气把窗户打开是为了使空气清新和干净，clean表示此意，故本题选D。
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