Question

if you had followed the doctor's advice, you ___ all right now.

A would be
B would be done

为什么A
主句不是would have done么阿!!!

Answer 1

主句从句时态不一样。
从句是如果
过去听从了医生建议，
主句是：
现在就没事了。
这种情况根据
主从句各自对应的结构来做。
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Answer 2

因为有now，表现在。
if you had followed the doctor's advice,you would be all right now.
如果你那时听了医生的劝告，你现在就好了。
if you had followed the doctor's advice,you would have been all right then.
如果你那时听了医生的劝告，你那时就好了。

Answer 3

这里没有do的事儿。