【单选题】【消耗次数：1】
I don’t know _______ to deal with such matter.
①
what
②
how
③
which
④
/
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相关题目
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39.He is said ___abroad, but I don`t know which country he studied in.
①
tohavestudied
②
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tobestudying
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I don’t know you want to keep the letter, I’ve _____it up.
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torn
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