be playing (第一人称肯定句,一般疑问句)be sing jng(第二人称否定句,特殊疑问句)

只听风吟2022-10-04 11:39:541条回答

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背断山 共回答了11个问题 | 采纳率100%
I am playing.
Are you playing?
you aren't singing.
What are you singing?
1年前

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