it was hard for him to practice oral English at home,where n_____ of his parents spoke the language

it was hard for him to practice oral English at home,where n_____ of his parents spoke the language

题目
it was hard for him to practice oral English at home,where n_____ of his parents spoke the language
答案
it was hard for him to practice oral English at home,where (none) of his parents spoke the languag
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