admin百科知識 2022-02-13 5:17:20 excuse me ,sir.you __open the door before the train stops .excuse me ,sir.you __open the door before the train stops .A.mustn't B.needn't C.may not D.don't have to網友廻答：匿名網友A仍然是嚴厲禁[jìn]止,語氣嚴厲MUSN'T 表示嚴厲禁[jìn]止,但是不能表推測 db標簽 生活常識_百科知識_各類知識大全»excuse me ,sir.you __open the door before the train stops .
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