We need to know something about weatern culture and customs.(保持原意)
We need to know something about weatern culture and customs.(保持原句意思)
___ ___ for us to know something about western culture and customs.
人气：420 ℃ 时间：2020-02-03 23:06:53
解答
_It's__ _necessary__ for us to know something about western culture and customs.
necessary 也可以用 important, essential,等等
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