题干

—You should have thanked the hostess before leaving.
—I meant ______. But I couldn’t find her when I was leaving.
A.toB.to doC.doingD.doing so
上一题 下一题 0.64难度 单项选择 更新时间:2011-12-25 03:29:34

答案(点此获取答案解析)