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        1. 【題目】We really thank our teachers for what they have done for us.They have been with us for nearly three years we came to middle school.

          A.sinceB.beforeC.until

          【答案】A

          【解析】

          句意:我們真的感謝我們的老師為我們所做的一切。自從我們上初中以來(lái),我們的老師已經(jīng)和我們?cè)谝黄饘⒔炅恕?/span>

          考查介詞辨析。since自從……以來(lái); before在……之前; until直到……為止。分析句意,可知是“自從我們上初中以來(lái)”,此處引導(dǎo)時(shí)間狀語(yǔ),since符合題意,故選A。

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