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突然之间，我知道了所有题目的答案，但是铃声响了。
Suddenly, I know all the answer, but the bell rang.
youdao
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我想他一定一早就知道题目了吧并且已经事先有时间准备好答案了。
I think he must knew the topic beforehand and got time to prepare in advance.
youdao
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我想他一定一早就知道题目了吧并且已经事先有时间准备好答案了。
I think he must knew the topic beforehand and got time to prepare in advance.
youdao