Mr.Smith,there'samanat

問題詳情：

Mr. Smith, there's a man at ________ front door who says he has ________ important news for you.

A. the; an             B. the; 不填            C. 不填;不填         D. 不填; an   

【回答】

B

知識點：冠詞

題型：選擇題