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We shall have to ________ if we want to make a success of it.
A. go out B. go all outC. go forward D. go ahead
昨日习题答案:He comes to our room for a chat ________ at weekends. A. every once in a while B. every once in a timeC. every one in a while D. every one in a time标准答案是:A.
本题分析:
every once in a while意为“偶尔,间或”,“次数 + 一段时间”是个固定结构,如:twice a day(一天两次)。
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