d'd' /d/ 
the short form of ‘do’: 
D'you know how many people are going to be there?
the short form of ‘do’: D'you know how many people are going to be there?
| 单词 | d' |
| 释义 | d'd' /d/ the short form of ‘do’: D'you know how many people are going to be there? |
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