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英语
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-Hi,Mary. -Hi,Lucy. I ------- you are here. A.didn't know B.don't know
人气：457 ℃ 时间：2019-12-18 09:33:03
解答
B能给点解释么~~我也是犹豫不定的~如果选A的话,后面are要变成过去式were~~~~~~~~~~~~~~~~~~~希望对你有所帮助,望采纳~~~~~~~~~~~~~~~~~
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