Incommunication,asmileisusually 國語站 題庫 3.16W 大中小設定文字大小 問題詳情:In communication, a smile is usually __________ strong sign of a friendly and _______ open attitude.A. the, / B. a, an C. a, / D. the, an【回答】C知識點:冠詞題型:選擇題 TAG標籤:#