—I wonder why Susan looks worried today. —I’m not sure, but she _____a small accident driving here. ...
2022-12-01 18:42:06 207次 2015届安徽省高二上学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
—I wonder why Susan looks worried today.
—I’m not sure, but she _____a small accident
driving here.
A. could have B. might
have C. might have had D. must have
had
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