________youhavemadeapromise,yoush

发布时间:2020-07-26 00:39:59

________ you have made a promise, you should carry it out.A.UntilB.OnceC.ForD.As soon as

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B解析until, for引导从句时,常不住于句首。本题意为“一旦你许诺,你应该履行诺言”,应选择once,即选项B。once与as soon as的异同点:两者都可作连词用,表示“一……就”,但所强调的部分不同。once(=from the moment that)强调条件,引导条件状语从句;as soon as(=at the moment that)强调时间,引导时间状语从句。如:①Once you begin, you must continue.一旦开始你就得继续下去。②I'll return it as soon as I can.我将尽早将它还给你。
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