I would have come earlier, but I ________ that you were waiting for me.
A．didn’t knowB．hadn’t know
C．would have knownD．haven’t known
A
因?yàn)閣ould come earlier是與過去事實(shí)相反的虛擬語氣，而后面分句表示的是事實(shí)：當(dāng)時(shí)我的確不知道…所以用一般過去時(shí)，選A。
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