问题描述:
I dressed very warmly for the trip,but I___so.The weather was hot.
a.needn't do
b.needn't have done
c.can't have done
d.shouldn't have done
要解释哪个选项正确,为什么是对的?
a.needn't do
b.needn't have done
c.can't have done
d.shouldn't have done
要解释哪个选项正确,为什么是对的?
问题解答:
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