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James has just arrived, but I didn’t know he _______ until yesterday.

A．will come B．was coming C．had come D．came

B

解析試題分析：本題意為：“我”此前不知道James要來。本題中“不知道”的是一個(gè)尚未發(fā)生的動(dòng)作，排除C、D兩項(xiàng)。didn’t know要求后接表示“過去將來”的動(dòng)詞，排除A項(xiàng)。故B項(xiàng)正確。
考點(diǎn)：考查動(dòng)詞時(shí)態(tài)的語境運(yùn)用。

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