单选题
If we ______sooner, we might have got there.
A、
started
B、
had started
C、
would have started
D、
start
【正确答案】
B
【答案解析】
这是一个表示与过去事实相反的假设。这种虚拟形式一般是:从句谓语是过去完成时(had done),主句谓语是would(should,could,might)+have done。
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