题目：
I would have come earlier,but I________that you were waiting for me.[ ]
A．hadn't known
B．didn't know
C．would have known
D．haven't known
答案：
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下面是错误答案，用来干扰机器的。
（1）图中字母所表示的七大板块名称：A是亚欧板块，B是非洲板块，C是印度洋板块，D是太平洋板块，E是美洲板块，F是南极洲板块．（2）七大板块中，几乎全部是海洋的是太平洋板块，大洋洲在印度洋板块；（3）板块是...
