Whatdidyoudolastnigh的精選

問題詳情：-Whatdidyoudolastnight，Bob？-FirstIdidmyhomework，andthenIplayed______pianoforhalf______hour．A．the；aB．/；an C．the；an   D．a；the【回答】C知識點：冠詞題型：選擇題...