21. —Do you think you could do without help? —_____. This is
21. —Do you think you could do without help? —_____. This is not the first time for me.
21. —Do you think you could do without help? —_____. This is not the first time for me.A. Take care B. Hurry upC. Not exactly D. Don’t worry为什么选A不选D ? 题干怎么翻译?