didn't
因为是【我当初】不知道,现在已经知道了.ok?
希望我的回答能够帮到你.如有疑问,欢迎追问.O(∩_∩)O
I'm afraid you can't sit here.Sorry,I ___ know.1.don't 2.didn't 请问选哪个?
I'm afraid you can't sit here.Sorry,I ___ know.1.don't 2.didn't 请问选哪个?
英语人气：128 ℃时间：2019-10-08 12:19:24
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