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高考◆英语◆安徽省題庫下載題庫

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29. A lot of language learning,______has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
(A). as
(B). it
(C). which
(D). this



29. A lot of language learning,______has..-阿摩線上測驗