单选题
What ______ if the weather had been fine yesterday?
A、
would you do
B、
would you have done
C、
did you do
D、
have you done
【正确答案】
B
【答案解析】
本题考查的是虚拟语气。If引导对过去情况的假设句，则用If．”had，…would have done．所以选B．本句意思是：如果昨天天气好的话，你本会做什么呢?
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