【题目】Fortunately I _______ a seat belt, otherwise I would have been injured.
A. am wearing B. was wearing
C. have been wearing D. have worn
在线课程【答案】B
【解析】
考查虚拟语气。句意：幸运的是我系了安全带，否则我就受伤了。本题中 otherwise 表示“否则”，相当于一个虚拟条件句，其后相当于相应的主句。其中动词用了 would have done 的形式说明是与过去事实相反；所以前半句讲述的是过去的事实，用过去时态，再根据句意，我当时“正系着安全带”，要用进行时，综上，故选B。