【題目】 —Wow, you have a really good voice. I_____ you were good at singing.

—Thank you.

A. haven't known B. hadn't known

C. didn't know D. don't know

【答案】C

【解析】

試題分析：考查動(dòng)詞時(shí)態(tài)。句意是：你有真正的好聲音，我不知道你擅長(zhǎng)唱歌。根據(jù)句意可知：以前不

道你擅長(zhǎng)唱歌，所以句子用一般過(guò)去時(shí)態(tài)。故選C。

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