尋找適合你的 英語 教師……
解答 · 1
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The correct answer is "for". We use for+ a period of time (e.g. two days, a year, a month etc.), whereas we use "since" + the start of the period (e.g. Monday, January, 1991 etc.).
We don't use "from" with the Present Perfect, which can be easily confused with "for", so be careful :)
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