---Smith：International Bank Corporation(公司), Good afternoon.---Watkins：Good afternoon. Mr. Henry Chalmers, please.---Smith：I'm sorry, sir, ______. We open again at 9:30 on Monday morning.---Watkins：Thanks. Good-bye.A.but the bank's closedB.but Mr. Henry Chalmers is hereC.but today is sunnyD.but I'm not sure of him
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A解析思路分析：本题是关于去单位找人的一组对话．由空白前I'm sorry及空白后We open again at 9:30 on Monday morning.的语境可以判断出，当时银行是关门了，此人不在．