Iftheysucceeded________acease-fir

发布时间：2020-07-26 12:53:08

If they succeeded ________ a cease - fire, the UN observer will send in peace — keeping forces．A.to establishB.establishC.establishingD.in establishing

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D解析动词succeed in的用法是succeed in doing sth意思是“成功地做成某事”。比较：manage to do sth成功地做成某事。
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