Haveyouevernoticedan的精选

问题详情：阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。Haveyouevernoticedanadvertisementwhichsays“Learnaforeignlanguageinsixweeks,oryourmoneyback!Fromthefirstdayyourpronunciationwillbeexce...