since then,i _________ more and more differences between chi

since then,i _________ more and more differences between chinese and us cultures
填discovered 还是have discovered,为什么
cindyrain 1年前 已收到1个回答 举报

dingweizhi 幼苗

共回答了16个问题采纳率:100% 举报

have discovered,有since的句子里应该用完成时,也就是have+分词.
另外,us是不是改成our更好~

1年前

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