Alice is very helpful. I saw her ________ the old clean their houses when I passed by the other day....
2022-10-21 06:10:15 113次 江苏省江阴市2017-2018学年七年级下学期期末考试英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
Alice is very helpful. I saw her ________ the old clean their houses when I passed by the other day.
help B. helps C. helped D. helping
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