单选题：Edward, you play so well. But I _________ you played the pia

题目内容：

Edward, you play so well. But I _________ you played the piano. A．didn't know
B．hadn't known
C．don't know
D．haven't known

参考答案：

答案解析：

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分类：英语题型：单选题

分类：英语题型：单选题