题目内容
---It’s so late. Why not write the report tomorrow?
---But I don’t know _________ I can do it if not now.
A. why B. whenC. how D.where
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19.---I had a pleasant winter vacation with my family in the north.
---______.( )
---______.( )
| A. | Oh,that's nice of you | B. | Enjoy yourself | ||
| C. | Well done | D. | Glad to hear that |