单选题 When learning a foreign language, the best ＿＿＿＿＿＿＿＿＿ is to speak as much as possible. 的答案

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题目内容：
When learning a foreign language, the best ＿＿＿＿＿＿＿＿＿ is to speak as much as possible.
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