—Tina, I have cleaned most of the windows. —That's very kind you. It's difficult me to do it all by ...
2022-11-25 18:15:11 141次 2016届广东南雄二中九年级6月模拟考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
—Tina, I have cleaned most of the windows.
—That's very kind you. It's difficult me to do it all by myself.
A. of； for B. for； of
C. for； for D. of； of
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