四六级考试

【单选题】 Only later ______ his notebooks, which contained details of all his thefts.
A．they came across
B．did they come across
C．they had come across
D．had they come across

网考网参考答案：B
网考网解析：
[解析] 本题考查倒装结构。本题中含有only的时间状语提前，因此句子的主语和谓语要部分倒装；又因为根据句意可以判断come across是发生在过去的动作，所以动词用一般过去时，故B项为正确答案。 [避错指南] A项和C项来倒装，可首先予以排除。而D项的时态是过去完成时；不合句意，所以这一选项也要排除。 查看试题解析出处>>