notallinventionswere的精選

問題詳情：單項選擇。—Inmyopinion，notallinventionswereinventedby________accident.—Well，youdoseemtohave________ntingneedsmuchtimeandhardwork.A．an；a B．an；the C．/；a D．/；the【回答】C知識點：冠詞題型：選擇題...