1、马钢两公司2009年外语水平测试英语公外模拟试卷4(答题写在答题纸上否则无效)Part I. VocabularyandStructureDirections: Choosetheonethatbestcompletesthesentence.Then,markyouranswerbywritingthecorrespondingletterontheAnswerSheet.1.Thecompletionofthetunnelhasbeen_____owingtoastrike. A.heldoff B.