Tom, you play the violin so well. But I ______ you can play the violin.

A. didn’t know B. don’t know C. hadn’t known D. haven’t known

 

A

【解析】

試題分析：句意：Tom, 你的鋼琴?gòu)椀倪@么好。但是我以前都不知道你會(huì)彈鋼琴。根據(jù)句意作者表達(dá)的意思是“以前不知道你會(huì)彈鋼琴”而現(xiàn)在知道了。所以“不知道”應(yīng)為過(guò)去時(shí)態(tài)。故選A。

考點(diǎn)：考查時(shí)態(tài)。

 

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