it's n_____ for english learners to know more about the history of britain
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it''sn_____forenglishlearnerstoknowmoreaboutthehistoryofbritainit''sn_____forenglishlearnerstoknowmore
it's n_____ for english learners to know more about the history of britain
it's n_____ for english learners to know more about the history of britain
it's n_____ for english learners to know more about the history of britain
It's (necessary ) for english learners to know more about the history of britain.
necessary 必要的
necessary、need
necessary