Edward, you play so well, but I          you played the piano.
A．don’t knowB．hadn’t knowC．didn’t knowD．haven’t known
C

試題分析：考查時(shí)態(tài)。句意：Edward，你彈的太好了�？晌叶疾恢滥銜䦶椾撉佟Ｕf明我以前不知道你會彈鋼琴，現(xiàn)在已經(jīng)知道了。故使用過去時(shí)。C正確。
考點(diǎn);考查時(shí)態(tài)
點(diǎn)評：本題的關(guān)鍵在于語境，從句意中可知我現(xiàn)在已經(jīng)知道你會彈琴了，那么不知道是過去不知道。
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